While testing MDL-42739 I discovered the action menu is not operation within a docked block.
To replicate:
- Log in as admin
- Turn on editing
- Dock a block
- Refresh the current page.
- Toggle the display of the docked.
- Notice that the block actions have not initialised.
I've tested in standard and can confirm the issue there, we should also of course test bootstrapbase based themes.