#994236 wmctrl: warning message from window manager

Package:
wmctrl
Source:
wmctrl
Description:
control an EWMH/NetWM compatible X Window Manager
Submitter:
Francesco Potortì
Date:
2021-09-14 10:42:04 UTC
Severity:
normal
#994236#5
Date:
2021-09-14 10:38:24 UTC
From:
To:
After remotely closing some windows with DISPLAY=:0 wmctrl -ic 0x058001b2
I looked into ~/.xsession-errors and discovered these messages:

Window manager warning: Receiving a NET_CLOSE_WINDOW message for 0x58001b2 (Indoor pos) without a timestamp!  This means some buggy (outdated) application is on the loose!
Window manager warning: Tried to ping a window with CurrentTime! Not allowed.

I use Mate with Marco on Lightdm, all updated to current testing distribution