unresponsive process window triggers too often

[Olaf Hering]

Am Wed, 27 May 2020 12:03:45 +0200
schrieb Olivier Fourdan <fourdan at gmail.com>:

> But if the client triggers the non-responsive dialog that's because it
> claims to support _NET_WM_PING but does not reply to the _NET_WM_PING
> message in timely manner, which would be a bug in the client.

How does a client claim support for it?
There are no traces of that string in the sources, xprop does say it is enabled.
WM_PROTOCOLS(ATOM): protocols  WM_DELETE_WINDOW, WM_TAKE_FOCUS, _NET_WM_PING, _NET_WM_SYNC_REQUEST

Is there a gtk function to enable or disable it?
Google did not reveal useful results for "_NET_WM_PING" AND "gtk".

Olaf
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