Eve Launcher causing strange input issues

For ~3 days now I have strange input-issues when the Eve-Launcher is open.

The mouse buttons won’t work anymore in other windows, e.g. I cannot tab to the browser and change tabs.

The Eve-Clients themselfs run as maximized windows. After some tabbing-around the mouse is usable in them, I can type in the chat, but the UI won’t accept shortscuts (F1, r, etc).

When I close the Eve Launcher things normalize themselfs after some tabbing around. I already deleted the shared cache.

Any advice is welcomed.