Ubuntu has issued an advisory today (November 5):
openSUSE has issued an advisory for this tomorrow (November 6):
The issue appears to be fixed upstream in 3.1c.
Hi, thanks for reporting this.
Assigned to the package maintainer.
(Please set the status to 'assigned' if you are working on it)
tmux-3.1c-1.mga8 uploaded for Cauldron.