PHPStorm has always seemed to pop up this "file changed" dialog - I don't understand it.
As far as I'm concerned, nothing else is operating on the files.
The only changes that show in the "diff" view are ones that I've made myself, in PHPStorm, but a few moments ago:
I can't think what else it would be. No other software does this; I can only think that this is somehow, buggy behaviour from PHPStorm.
I see that there are posts about this dating back to 2012 - is it time to revisit this functionality and debug it?
It's both frustrating and actually alarming to be told, sometimes every 10 minutes or so, that the files you think are solid, have somehow been changed.
Can we get to the bottom of this?