Follow-up Comment #1, bug #24042 (project wesnoth):
What is a "silent disconnect"?
If you mean going afk or similar then there is no technical solution to that.
Save the game and reload with the original host replaced.
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Follow-up Comment #14, bug #23318 (project wesnoth):
I tested on HEAD of your branch, it includes your commit and the crash seems
to be solved. :-)
It is not pretty -- http://imgur.com/pKYRo1k
But this is another issue.
Cannot comment on the original issue as redrawing after any window size