This has been happening to me over the past few days and the bug is somewhat game breaking and spammy. I have tested on Browser (Chrome) and Steam and this issue only seems to occur on Steam. Occasionally when I open my Will it will start some kind of auto-clicking that makes it really hard for me to do my "job" (writing my will, voting, etc). This issue also seems to be *sometimes* fixed by opening my notes but not always. This bug makes also makes it hard to do anything of importance such as filtering chat due to the menu spamming open and closed.
Please see the video below as it probably shows the bug better than I can describe it. As can also be seen in the video, you can see that my mouse leaves the menu that is spamming open and closed, so it doesn't seem to be some kind of left-click bug on my end.
https://youtu.be/RoJEJPlGovA