Crash: if insn.address != ea: -- AttributeError: 'NoneType' object has no attribute 'address'

[advokat11]

Traceback (most recent call last):
File "C:\Users/user/AppData/Roaming/Hex-Rays/IDA Pro/plugins\patching\actions.py", line 127, in activate
wid = PatchingController(self.core, get_current_ea(ctx))
File "C:\Users/user/AppData/Roaming/Hex-Rays/IDA Pro/plugins\patching\ui\preview.py", line 47, in init
self.refresh()
File "C:\Users/user/AppData/Roaming/Hex-Rays/IDA Pro/plugins\patching\ui\preview.py", line 223, in refresh
self.select_address(self.address)
File "C:\Users/user/AppData/Roaming/Hex-Rays/IDA Pro/plugins\patching\ui\preview.py", line 68, in select_address
if insn.address != ea:
AttributeError: 'NoneType' object has no attribute 'address'

[gaasedelen]

This is indeed a bug and I can understand why it would crash, but I can't actually seem to figure out how you triggered it. Even deleting segments.

The fix seems like I shouldn't be giving the user the ability to launch the assembly window in some special context, but I'm already pretty strict about where it even exposes the Assemble action anyway.

It seems rare enough that it's not a big deal, but I'm curious if anyone comes up with a way to reproduce this.