Steps to reproduce:

1. From Package Manager window, select a Custom package
2. Lock the Inspector window
3. In the Inspector window, press the Edit button
4. Observe that the fields turn from read-only to editable
5. Try editing the properties

Actual results: Properties cannot be edited, even if the Inspector window no longer shows them as read-only

Expected results: Inspector stays disabled because the package selection item is not editable.

Workaround: Click on the Inspector lock icon and now package fields are editable.

Reproducible with versions: 6000.3.0a4

Can’t test with versions: 6000.3.0a2 or earlier (Feature was introduced in 6000.3.0a3)

Tested on (OS): macOS 15.5, Ubuntu 24