"Replace widget" option doesn't trigger widget's onDelete()

[moertel]

Describe the bug

When adding a 5th widget triggers the familiar "replace" prompt, then whichever widget is picked is just made invisible. It still exists in the system and its onDelete() is never triggered. There's no way for the user to delete it afterwards, it's now a zombie. Tested with two separate apps (KWGT and Retro Mode Weather).

Steps to reproduce

To properly reproduce and witness this, you need an app that shows a list of its own active widgets. For example KWGT.

1. Add 3 widgets. (Doesn't matter which ones).
2. Add a KWGT widget. (Should now be 4 total widgets.)
3. Add a 5th widget. When prompted to replace one, choose to replace the KWGT widget.

Open KWGT and its widget overview.
Expected widget count: 0
Actual widget count: 1

Does the issue also occur with other 3rd-party launchers?

Problem doesn't occur with other launchers

Other 3rd-party launcher(s) tested

No response

Device name

Samsung Galaxy S25 Ultra

Android version

Android 15

Screenshots / Screen recordings

No response