* etc/PROBLEMS: Document stickyness problem with FVWM (Bug#31650)

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 09027332d80f59062b04fe4e3ca4a5b65ca956cf..6b15ee9ecaef91775a04e7a340ee3e73d20fb6b5 100644 (file)
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -1288,6 +1288,14 @@ do not know what.  If it is an Emacs bug, we hope someone can
 explain what the bug is so we can fix it.  In the mean time, removing
 the resource prevents the problem.
 
+*** FVWM: Some versions of FVWM incorrectly set the 'sticky' frame parameter.
+
+Version 2.6.4 of the FVWM can make a frame sticky (appear on all user
+desktops) when setting the 'sticky' frame parameter to nil.  This may
+happen without any special user interaction, for example, when Emacs
+restores a saved desktop.  A fix is to install version 2.6.7 of FVWM,
+see https://debbugs.gnu.org/cgi/bugreport.cgi?bug=31650.
+
 ** General X problems
 
 *** Redisplay using X is much slower than previous Emacs versions.