3 of 4 pages on "Manage / Plugins" render incorrectly when "preparing for shutdown"

[MarkEWaite]

Jenkins and plugins versions report

Environment - Jenkins 2.528.3

Jenkins: 2.528.3
OS: Linux - 6.12.57+deb13-amd64
Java: 17.0.17 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)
---
PrioritySorter:905.v35c21f62f980
adoptopenjdk:146.v1898676a_f04e
analysis-model-api:13.18.0-935.v784ca_107400a_
ant:520.vd082ecfb_16a_9
antisamy-markup-formatter:173.v680e3a_b_69ff3
apache-httpcomponents-client-4-api:4.5.14-269.vfa_2321039a_83
apache-httpcomponents-client-5-api:5.6-183.ve5a_8a_b_e71e59
asm-api:9.9.1-189.vb_5ef2964da_91
authentication-tokens:1.144.v5ff4a_5ec5c33
badge:2.562.vc3c0b_6925377
basic-branch-build-strategies:317.v85b_331d6cc42
bootstrap5-api:5.3.8-895.v4d0d8e47fea_d
bouncycastle-api:2.30.1.82-277.v70ca_0b_877184
branch-api:2.1268.v044a_87612da_8
build-name-setter:2.5.1
build-timeout:1.39
caffeine-api:3.2.3-194.v31a_b_f7a_b_5a_81
checks-api:373.vfe7645102093
cloud-stats:377.vd8a_6c953e98e
cloudbees-bitbucket-branch-source:937.2.3
cloudbees-folder:6.1073.va_7888eb_dd514
clover:4.15.0.677.v22c71ca_e6450
command-launcher:123.v37cfdc92ef67
commons-collections4-api:4.5.0-8.va_d5448ef9011
commons-compress-api:1.28.0-2
commons-lang3-api:3.20.0-109.ve43756e2d2b_4
commons-text-api:1.15.0-210.v7480a_da_70b_9e
conditional-buildstep:1.5.0
config-file-provider:1006.vc7366c201f57
configuration-as-code:2006.v001a_2ca_6b_574
copyartifact:770.va_6c69e063442
coverage:2.3060.v035a_5557cdb_c
coverage-badges-extension:197.vb_390173d00ec
credentials:1458.v7291f840651c
credentials-binding:702.vfe613e537e88
dark-theme:574.va_19f05d54df5
data-tables-api:2.3.5-1497.v38449eb_7d5a_1
description-setter:264.v1957f215dcd5
display-url-api:2.217.va_6b_de84cc74b_
docker-commons:457.v0f62a_94f11a_3
docker-java-api:3.7.0-133.v93b_8fb_c17a_77
docker-plugin:1308.vff6e33248305
docker-workflow:634.vedc7242b_eda_7
durable-task:639.vefb_3d8372f6d
echarts-api:6.0.0-1165.vd1283a_3e37d4
eddsa-api:0.3.0.1-19.vc432d923e5ee
elastic-axis:615.vb_f7c20ec040e
embeddable-build-status:637.vd878e68178f8
emoji-symbols-api:17.0-57.v8d44b_9a_b_d5ea_
envinject:2.926.v69c9b_3896a_96
envinject-api:1.236.v35fd4d7eb_515
external-monitor-job:223.vb_fddcf42c9b_3
font-awesome-api:7.1.0-882.v1dfb_771e3278
forensics-api:3.1772.v99ca_3d83b_9fa_
git:5.8.2-rc5536.2da_0f9e5a_9e6
git-client:6.5.0
git-forensics:3.2274.v3dc0fd546572
git-parameter:460.v71e7583a_c099
git-server:137.ve0060b_432302
git-version-monitor:7.v2a_0f40b_9f2f4
gitea:250.v76a_0b_d4fef5b_
github:1.45.0
github-api:1.330-492.v3941a_032db_2a_
github-branch-source:1917.v9ee8a_39b_3d0d
github-scm-filter-aged-refs:59.vc6b_39c26988c
github-scm-trait-commit-skip:0.4.0
gitlab-api:6.2.0-111.vf174d6b_8c12e
gitlab-branch-source:739.v9781b_1cdb_72a_
groovy-postbuild:272.v52a_03efb_8653
gson-api:2.13.2-173.va_a_092315913c
h2-api:11.1.4.199-36.vb_ee07e965744
handy-uri-templates-2-api:2.1.8-38.vcea_5d521d5f3
http_request:1.24
ignore-committer-strategy:37.v0d3157c4a_ef8
implied-labels:439.v4900744249a_3
instance-identity:203.v15e81a_1b_7a_38
ionicons-api:94.vcc3065403257
jackson2-api:2.20.1-423.v13951f6b_6532
jakarta-activation-api:2.1.4-1
jakarta-mail-api:2.1.5-1
jakarta-xml-bind-api:4.0.6-12.vb_1833c1231d3
javadoc:354.vee1a_660b_4990
javax-activation-api:1.2.0-8
javax-mail-api:1.6.2-11
jaxb:2.3.9-143.v5979df3304e6
jdk-tool:83.v417146707a_3d
jersey2-api:2.47-165.ve7809a_3e87e0
jersey3-api:3.1.11-4.v77818819c2e1
jjwt-api:0.11.5-120.v0268cf544b_89
job-dsl:1.93
joda-time-api:2.14.0-149.v1c3ce991d1b_9
jquery3-api:3.7.1-619.vdb_10e002501a_
jsch:0.2.16-95.v3eecb_55fa_b_78
json-api:20251224-185.v0cc18490c62c
json-path-api:2.10.0-202.va_9cc16c1e476
jsoup:1.21.2-66.v6ea_38164b_8a_2
jspecify-api:1.0.0-1.ve7231e6d0d15
junit:1369.v15da_00283f06
junit-attachments:330.v25180b_263160
junit-realtime-test-reporter:166.v889e7b_0e23a_a_
label-verifier:116.vb_845759df630
mailer:525.v2458b_d8a_1a_71
markdown-formatter:312.va_b_3dea_1413a_f
matrix-auth:3.2.9
matrix-project:870.v9db_fcfc2f45b_
maven-plugin:3.27
metrics:4.2.37-489.vb_6db_69b_ce753
mina-sshd-api-common:2.16.0-167.va_269f38cc024
mina-sshd-api-core:2.16.0-167.va_269f38cc024
monitoring:2.6.0
naginator:1.530.vb_6d120f250b_1
nodelabelparameter:759.vb_b_e95db_f3251
okhttp-api:4.12.0-195.vc02552c04ffd
oss-symbols-api:424.ved751e062911
parallel-test-executor:611.va_92b_d1852e52
parameterized-trigger:873.v8b_e37dd8418f
pipeline-build-step:571.v08a_fffd4b_0ce
pipeline-github:2.8-162.382498405fdc
pipeline-github-lib:65.v203688e7727e
pipeline-graph-analysis:245.v88f03631a_b_21
pipeline-graph-view:661.v6003f4542123
pipeline-groovy-lib:787.ve2fef0efdca_6
pipeline-input-step:540.v14b_100d754dd
pipeline-maven:1567.vb_2c3a_2116860
pipeline-maven-api:1567.vb_2c3a_2116860
pipeline-milestone-step:138.v78ca_76831a_43
pipeline-model-api:2.2277.v00573e73ddf1
pipeline-model-definition:2.2277.v00573e73ddf1
pipeline-model-extensions:2.2277.v00573e73ddf1
pipeline-stage-step:322.vecffa_99f371c
pipeline-stage-tags-metadata:2.2277.v00573e73ddf1
pipeline-utility-steps:2.20.0
plain-credentials:199.v9f8e1f741799
platformlabeler:2734.v604521b_646b_b_
plot:2.4.0
plugin-util-api:6.1192.v30fe6e2837ff
pollscm:1.9
preSCMbuildstep:115.vf9808414429d
prism-api:1.30.0-630.va_e19d17f83b_0
promoted-builds:992.va_00888f21b_74
resource-disposer:0.25
run-condition:243.v3c3f94e46a_8b_
scm-api:724.v7d839074eb_5c
script-security:1385.v7d2d9ec4d909
snakeyaml-api:2.5-143.v93b_c004f89de
ssh-agent:386.v36cc0c7582f0
ssh-credentials:361.vb_f6760818e8c
ssh-slaves:3.1085.vc64d040efa_85
sshd:3.374.v19b_d59ce6610
structs:362.va_b_695ef4fdf9
swarm:3.51
testng-plugin:940.vc244edffc2ec
text-finder:1.33
theme-manager:327.v780d7096ec29
throttle-concurrents:624.vc427fa_e0e503
timestamper:1.30
token-macro:477.vd4f0dc3cb_cf1
trilead-api:2.284.v1974ea_324382
variant:70.va_d9f17f859e0
versioncolumn:320.v6b_b_814ca_01f7
view-job-filters:405.v9a_5fddc9230d
warnings-ng:12.9957.v418f12633413
workflow-aggregator:608.v67378e9d3db_1
workflow-api:1384.vdc05a_48f535f
workflow-basic-steps:1098.v808b_fd7f8cf4
workflow-cps:4238.va_6fb_65c1f699
workflow-durable-task-step:1464.v2d3f5c68f84c
workflow-job:1559.va_a_533730b_ea_d
workflow-multibranch:821.vc3b_4ea_780798
workflow-scm-step:466.va_d69e602552b_
workflow-step-api:710.v3e456cc85233
workflow-support:1010.vb_b_39488a_9841
ws-cleanup:0.49
xshell:325.v3fda_132b_2641

What Operating System are you using (both controller, and any agents involved in the problem)?

Linux controller with a mix of Linux and Windows agents

Reproduction steps

1. Prepare the controller for shutdown from the "Manage Jenkins" / "Prepare for Shutdown"
2. Open the "Manage Jenkins" / "Plugins" pages and see that 3 of the 4 pages show a gradient instead of showing the shutdown banner. Advanced settings renders correctly, while the other 3 pages show the gradient instead of the banner

Expected Results

Banner should be shown on all 4 of the pages of the plugin manager

Actual Results

Banner is only shown on the "Advanced Settings" page.

Incorrect pages look like this:

The Advanced Settings page looks like this:

Anything else?

I have not bisected to identify the change that introduced the issue. Since this is 2.528.3, the change was many versions ago

Are you interested in contributing a fix?

No response

[ayush00git]

Hey @MarkEWaite
I think i can fix this, can i work on this and submit a PR...

[MarkEWaite]

Hey @MarkEWaite I think i can fix this, can i work on this and submit a PR...

I'm not sure that this issue is well suited to a new contributor, but you are welcome to investigate it and propose a fix if you're willing to spend the effort.

I think that the most important part of the investigation is the git bisect to identify the exact commit that introduced the issue. Once you've identified the exact commit that introduced the issue, you can identify the minimal change to implement a fix.

Please don't attempt to fix the issue without first identifying the commit that caused the issue. It seems to be a common mistake for new contributors that they decide to ask AI to make a fix for them, then AI proposes a change that is much larger than the new contributor can understand, then a lot of extra work is required from reviewers to reduce the AI proposed change to be the correct and minimal change.

If you're not willing to spend the time to identify the change that caused the original problem, please don't work on this issue.

The bisect process can be made faster if you place a copy of the run-it script in the parent directory of the directory that contains the git repository of Jenkins core. Then use git bisect to checkout a specific version, compile Jenkins with the quick-build profile at that version, then execute the ../run-it script and navigate to the /manage/pluginManager/ page in your web browser. If the bug is visible, mark that point in the bisect as "bad" with git bisect bad. If the bug is not visible, mark that point in the bisect as "good" with git bisect good.

run-it.tar.gz

While developing that script, I confirmed that Jenkins 2.504 does not have the issue and Jenkins 2.514 has the issue.

Comment added to pull request as #26024 (comment)

[ayush00git]

@MarkEWaite
Thanks for your review, actually i used Lumyst to identify the folder structure of this. This git bisect is a whole new command to me, this surely will teach me something new, i'm willing to give time to this. I will go through this command and try to investigate the real commit that caused this issue, thanks a lot to let me know these things.

[dhanush-raja-a]

Hi @MarkEWaite,

I followed your guidance and completed a full git bisect for this issue.

Summary of findings:

• Last known good commit:
ee56e8f (“Fill in since annotations”)

• First bad commit:
c42ab43
“Redesign the Jenkins header (#10245)”

I re-tested both commits to confirm:

• ee56e8f → shutdown banner renders correctly on all Plugin Manager pages
• c42ab43 → banner is missing on 3 of 4 Plugin Manager pages

The issue is also present on current master (2.549).

Before proceeding further, I wanted to check:
Is anyone currently working on a fix for this issue, or would it be okay for me to start investigating a minimal fix based on this bisect result?

Thanks for the guidance on the investigation process — it was very helpful.

[timja]

Have a look through this issue, the answer should be clear

[ayush00git]

Hi @MarkEWaite,

I followed your guidance and completed a full git bisect for this issue.

Summary of findings:

• Last known good commit: ee56e8f (“Fill in since annotations”)

• First bad commit: c42ab43 “Redesign the Jenkins header (#10245)”

I re-tested both commits to confirm:

• ee56e8f → shutdown banner renders correctly on all Plugin Manager pages
• c42ab43 → banner is missing on 3 of 4 Plugin Manager pages

The issue is also present on current master (2.549).

Before proceeding further, I wanted to check: Is anyone currently working on a fix for this issue, or would it be okay for me to start investigating a minimal fix based on this bisect result?

Thanks for the guidance on the investigation process — it was very helpful.

Hii @dhanush-raja-a
If you want to work on this you can, I previously worked on it (#26024), but it's something confusing to me. If it is clear to you, then I think you can start working.