Experiencing issues where end-users log in to 2016 Server RDS farm with 3 session hosts and, while logged in and working a bubble like pop-up much like a comment shows up in the middle of the screen stating "Caps Lock is On". Unable to get rid of until rebooting. End-users are for the most part using 10zig thin clients and when this occurs Caps Lock is NOT on. RDS session hosts are VMWare VM's so no third-party keyboard tools to speak of. Occasionally if a user logs out but doesn't reboot the message will stay on the screen until someone clicks somewhere on the screen. Tried ease of accessibility, notifications and nothing. Also tried to unplug the keyboard while connected and pop-up remains. Happens on all three session hosts - no updates that I am aware of that precipitated this.
Thanks in advance!