The posbutton on the message window is considered as fixed width

[RESTRICTED ACCOUNT]

The posbutton on the message window is considered as fixed width.
So if the theme has a posbutton image larger than 12px it will overlap the text.
The relevant part of the code is as follows:
https://github.com/aburch/simutrans/blob/472d8fde95f2836213cf3a7efc2c6360d743a687/gui/message_stats_t.cc#L226
https://github.com/aburch/simutrans/blob/472d8fde95f2836213cf3a7efc2c6360d743a687/gui/message_stats_t.cc#L254

[Yona-TYT]

This is the only list that still has this problem, I suppose it is because the message center window was never optimized so that the components would align automatically.

[Dwachs]

should be better with r9347

[Yona-TYT]

should be better with r9347

Very happy to hear that, as soon as I got home I tried it.