Hi ! I’m facing the exact same problem : the extension detects errors but does not correct it when the Accept button is pressed. And there is no way to roll back to a previous version of a Word add-in…
I’m using Word 2019, and the current LT add-in version is 1.0.1.0.
There is an other post on this forum about this issue : LanguageTool in Word does not work at all
@dnaber do you have any inputs ?