Problem: Lightning makes reply and forward buttons unrespons

[nalina]

Hey folks,
strange error since today (Woin10, latest thunderbird release).
The reply and forward buttons in emails do not work anylonger (Ctrl-R does). Restarted thunderbird in safe-mode: fine. Tried out which add-on causes the problem in full mode, and it turned out, its lightning. How could that be?
I definitely ned lightning - any tipps or workarounds?
Greatly appreciated!

[nalina]

Ok, I found an answer - though not related to thunderbird. I undid the latest Win10 update, and everything works fine again, Probably a bug not originally from lightninng, but something with Windows10...