As the title says, the client captures all mouse movement/clicks/scrolling done outside the game window when the game is focused.
This is especially annoying when using multiple monitors, since you can’t click anything without making the client detect a mouse press before losing focus.
This has been happening for quite a while already (from few weeks to few months), so it’s not a recent thing.
This happens only on the regular client. Windows 10 app works fine.
They have had this glitch for around 1 and a half months. For some reason, they have fixed it and then broken it twice in the past 2 weeks. I made a thread about it by the way, in case you want to check out what some of the other devs had to say about it.