[Bug]: Pulldowns are not updated on reload

[ING-MOP]

✈ Pre-Flight checks

• I don't have SentinelOne antivirus installed (see above for the solution)
• I have searched in the issues (open and closed) but couldn't find a similar issue
• I have searched in the pyRevit Forum for similar issues
• I already followed the installation troubleshooting guide thoroughly
• I am using the latest pyRevit Version

🐞 Describe the bug

When i click Reload pyRevit it would normally update all addins.
The new issue after V6 is:
If i add a new button to an existing pulldown, and i click reload pyRevit, it will not show the newly added button in the pulldown.
If i move the button from the pulldown to the panel instead of a pulldown, it will show when i click reload.

⌨ Error/Debug Message

No errors messages.

♻️ To Reproduce

1. Make sure you have a pulldown with some buttons
2. Open Revit
3. Copy one of the buttons and rename it to Test
4. Click reload pyRevit
5. Here it should add the newly created button, but it dosnt.

⏲️ Expected behavior

No response

🖥️ Hardware and Software Setup (please complete the following information)

==> Registered Clones (full git repos)
==> Registered Clones (deployed from archive/image)
master | Branch: "master" | Version: "6.4.0.26100+0515" | Path: "C:\Users\mop\AppData\Roaming\pyRevit-Master"
==> Attachments
master | Product: "2026 First Customer Ship" | Engine: DEFAULT (2712) | Path: "C:\Users\mop\AppData\Roaming\pyRevit-Master"
master | Product: "2025 First Customer Ship" | Engine: DEFAULT (2712) | Path: "C:\Users\mop\AppData\Roaming\pyRevit-Master"
master | Product: "2024.3" | Engine: DEFAULT (2712) | Path: "C:\Users\mop\AppData\Roaming\pyRevit-Master"
master | Product: "2023.1.4" | Engine: DEFAULT (2712) | Path: "C:\Users\mop\AppData\Roaming\pyRevit-Master"
master | Product: "2022.1.7" | Engine: DEFAULT (2712) | Path: "C:\Users\mop\AppData\Roaming\pyRevit-Master"
master | Product: "2021.1.9" | Engine: DEFAULT (2712) | Path: "C:\Users\mop\AppData\Roaming\pyRevit-Master"
==> Default Extension Search Path
C:\Users\mop\AppData\Roaming\pyRevit\Extensions
==> Extension Search Paths
K:\CAD\Revit\Revit Common\05_Development\MOP\GitHub Fake Server
C:\Users\mop\Github Local
==> Extension Sources - Default
https://github.com/pyrevitlabs/pyRevit/raw/master/extensions/extensions.json
==> Extension Sources - Additional
==> Installed Revits
2026 First Customer Ship | Version: 26.0.4.409 | Build: 20250227_1515(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2026\"
2025 First Customer Ship | Version: 25.0.2.419 | Build: 20240307_1300(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2025\"
2024.3 | Version: 24.3.0.13 | Build: 20240912_1515(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2024\"
2023.1.4 | Version: 23.1.40.56 | Build: 20240411_0945(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2023\"
2022.1.7 | Version: 22.1.70.9 | Build: 20240704_1515(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2022\"
2021.1.9 | Version: 21.1.90.15 | Build: 20230907_1515(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2021\"
==> Running Revit Instances
PID: 29636 | 2024.3 | Version: 24.3.0.13 | Build: 20240912_1515(x64) | Language: 0 | Path: "C:\Program Files\Autodesk\Revit 2024"
==> User Environment
Microsoft Windows 10 [Version 10.0.26200]
Executing User: INTERN\mop
Active User: INTERN\mop
Admin Access: No
%APPDATA%: "C:\Users\mop\AppData\Roaming"
Latest Installed .Net Framework: 10.0.4
Installed .Net Target Packs: v4.0 v4.5 v4.5.1 v4.5.2 v4.6 v4.6.1 v4.7.2 v4.8 v4.X
Installed .Net-Core Target Packs: v9.0.306
Active CPython Engine Version: 3123
pyRevit CLI v6.4.0.26100+0515.06e6e8108e8aaccfbb7080163a437e19236a8533

Additional context

[Wurschdhaud]

Can you try turning of the new launcher in settings and check if the issue persists?
If so, it should be linked to

• [Task]: New C# Loader Testing #2995

[ING-MOP]

Can you try turning of the new launcher in settings and check if the issue persists? If so, it should be linked to

* [[Task]: New C# Loader Testing #2995](https://github.com/pyrevitlabs/pyRevit/issues/2995)

I tried to disable the new launcher and it behaves as it should.
Im responding here, but both issues got "solved" by switching to old launcher.
Pulldown updates when i click reload now, and beta is respected.

How i did:
I created a new button in the pulldown and clicked reload - It didnt appear. Then i switched to old launcher (Without restarting) and it showed up in the pulldown. (I switched back to new launcher, still in same Revit session without restarting, and its now visible in the pulldown).

Another thing i noticed is the icons became bigger with old launcher in the pulldowns as well, I'm not sure if this is a bug or intended. Just an observation:

Old launcher: (Hides the beta and have bigger icons)

New launcher: (Dosnt hide the beta and have smaller icons)

[Wurschdhaud]

In this case: @romangolev can you check?