gp preview requires a click before it opens Simple Browser

[apolopena]

Bug description

In certain situations gp preview requires a user click before the Simple Browser opens a preview

I believe I have finally been able to consistently reproduce this issue in situations where the browser window running the Gitpod workspace does not have focus such as in the case of a multiple monitor workflow or a single monitor worflow where two windows are sharing the same screen but the window with the Gitpod workspace running in it doesn't have focus.

Also the below elements were also present in in my project repository when I was able to consistently reproduce this issue:

• The port to be previewed is set to onOpen: ignore in .gitpod.yml
• gp preview $(gp url $port) fires off from a .gitpod.yml task (where $port is whatever port you want to preview).

I have created a repository that I am pretty sure isolates the issue.

Steps to reproduce

1. Create a new workspace from this repository
   • https://gitpod.io/#/https://github.com/apolopena/gp-preview-bug
2. Take focus away from the browser window that is running the workspace by clicking on another window but keep the original window visible.
3. Wait for the build to finish

The preview browser should automatically open 3 seconds after the build finishes from the "Preview" terminal but nothing happens until you give the browser window focus by clicking anywhere on it.

Workspace affected

Expected behavior

Simple Browser should open without user interaction when a gp preview call is made even if the browser window does not have focus.

Example repository

https://github.com/apolopena/gp-preview-bug

Anything else?

[shaal]

I have this exact issue.
I use bash for gp preview.
I can replicate it by opening https://github.com/shaal/DrupalPod in gitpod.

[axonasif]

I'm unable to reproduce this on my system.
OS: Macintosh 12.2
Browser: Chrome Version 97.0.4692.99 (Official Build) (arm64)

I just opened your link and did no input either from my trackpad or keyboard, I even hid the mouse pointer in a corner before the workspace launched.

[apolopena]

The bug appears to be intermittant.

I tried 6 times in a row today and could not reproduce it.
Yesterday the bug happened 4 times in a row.

[axonasif]

Could be.

[shaal]

I was about to tell you, try my repo, it's ALWAYS like that.
Then I tried it myself, and preview just worked... without clicking the mouse.

The reason I didn't open this issue before, is that I couldn't find a simple enough repo to replicate the problem with.

[shaal]

@axonasif @apolopena
I see this issue today, try this link:
https://gitpod.io/#https://github.com/shaal/DrupalPod

Do not click with the mouse on anything.
See that the terminal finish running all the commands.
Click with the mouse in the terminal - and you'll see the preview displayed.

[apolopena]

@shaal
I just tried your repo and could not replicate. it This is an elusive bug indeed.
Nice work on Drupalpod by the way.

[shaal]

@apolopena Thank you :) yes, I cannot find how to replicate the bug in a consistent way.

[axonasif]

Could you guys take a look at your console logs when this happens, maybe something interesting there?

[shaal]

@axonasif console has lots of warnings and errors, but that's normal as far as I know.

After clicking in terminal these lines are added in console.log:

Error with Permissions-Policy header: Unrecognized feature: 'interest-cohort'.
shaal-drupalpod-dgtnd229dih.ws-us29.gitpod.io/:1 [Intervention] Images loaded lazily and replaced with placeholders. Load events are deferred. See https://go.microsoft.com/fwlink/?linkid=2048113