In one game, I could not see the wound details for wounded soldiers in the battlescape. Instead of the usual information (body part and HP/round), there was only a black box in the health status page. Also opening the status window took really long (30 seconds), so I had a look at the command line output, and saw there, that literally thousands of warnings were printed (the log later showed that there were something over 25000 lines):

2020/10/25 23:06:19 [STATS] Manuela Timofeev C(A) is bleeding (damage: 8)
2020/10/25 23:06:20 Team 7 ended round
2020/10/25 23:06:20 Team 0's round started!
2020/10/25 23:06:22 Team 0 ended round
2020/10/25 23:06:22 Team 1's round started!
2020/10/25 23:06:37 [STATS] quazgar (Calvin Olakuotu A) kills alien (Swhzf Vso Zwfwz) with Full-Auto of plasrifle_ammo (entnum: 95)
2020/10/25 23:06:46 Music: track changed from Crystan-Battlescape02 to space.
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_torso' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_legs' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_legs' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_legs' already exists
2020/10/25 23:07:04 UI_AbstractNodeCallCreateChild: Node with name 'wound_humanoid_legs' already exists
...

This did not happen when playing the day before and I have not yet tried to reproduce it. The log does not suspicious to me otherwise.

This is with the vanilla 2.5 version distributed by Debian stable.