Yes, the log file is regenerated each load of the game.
What language does autodetect show?
Are you you using a certain map? Mazim's maps give me that issue.
Confirmed as of [bbf606]. I'm not 100% sure, but I think was introduced around the time @stiangre committed [89c6b1]. I took a look at SwingGUI.java method showClientOptionsDialog() and I see refreshGuiUsingClientOptions() is the only thing new since 2020.
Tested after this commit. Didn't reproduce. Given the nature of this bug, would it be worth releasing a 0.12.1 soonish so as to not have game freezing bug out there.
Makes the website look better on mobile.
Merge branch 'master' of ssh://git.code.sf.net/p/freecol/git
Split FreeColAction:275 so we can see where the NPE in BR#3249.