Factorio Forums

If you have a button in the left top window (or any other element really), of which hits the top left corner (thus no padding), it will trigger the hover effect when your factorio game instance loses window focus.

The bug can be reproduced with the redmew scenario, any scenario from this list should do: https://github.com/Refactorio/RedMew/re ... 26-06743fa

Here's a twitch clip showing the hover (made by TheOrangeAngle) https://clips.twitch.tv/EndearingFineBu ... RedBlaster
Here's a screenshot that I made, notice my mouse being on discord (second monitor, fullscreen game mode, also happens in windowed)

I have found that it doesnt even need to be a loss of focus, I have a duel monitor setup and even when the game is focused if my mouse is on the other screen then it will act at 1,1. I saw that it was at 1,1 by enabling crtl+f6 and seeing that the mod_gui_button_flow was being selected by the debug popup.

Note that in this picture I do not click onto the other widow and that factorio still recives the keyboard inputs.

Thanks for the report, it is now fixed for the next release.