Blender Version
Broken: 72a199e148b20c

Short description of error

BLI_assert(id->us == 0) in id_delete() fails when calling the text unlink operator for a text data-block created through "Edit Source".

Exact steps for others to reproduce the error

• Enable Developer Extras in Preferences.
• Switch to Scripting workspace.
• Right-click > Edit Source on some button
• Unlink the text data-block in the Text Editor.

A few things:

• Why does TEXT_OT_unlink actually delete the data-block? This should either be corrected or the name changed.
• I noticed we don't execute the UI foreach_id() callbacks (WM/screen) when deleting data-blocks, shouldn't we do this?
• Apparently this isn't a new issue, rB48418ec125413b.