Upon a bit more poking around I have managed to consistently replicate the symptoms I have witnessed pre crash as well as the crash. They are independent but share a common culprit, the Full List button on the LCU List window. Moreover they are reproducible by starting Scenario 1 as either Republicans or Nationalist.
For the visual errors with the Full LCU List
Method:
1. Click on a base with at least 1 LCUs. Some of the bases I tested were Burgos and Miranda De Bueho
2. CLick
Full List on LCU List
3. Exit full list
4. Click
Update Hex on LCU List
5. Click
Full List on the base from step 1 and witness wrong units show up. Interestingly exclusively ENG and CD units.
Examples
Burgos after updating hex at Serracin.

- Zrzut ekranu 2026-01-28 235043.png (987.83 KiB) Viewed 149 times
Miranda de Ebro after updating hex at Ezcaray

- Zrzut ekranu 2026-01-28 235155.png (1.17 MiB) Viewed 149 times
Burgos after updating hex at Burgos.

- Zrzut ekranu 2026-01-29 014214.png (2.32 MiB) Viewed 149 times
Notes
- At step 4 you can click Update Hex after clicking on any hex, it does not have to be the hex from step 1.
- [Clicking an empty hex causes the Full List to be empty.
- Clicking Update Hex at a given hex causes the same set of units independent of where Full List was clicked.
- [ LCU List still displays correct units but there are issues as reported in previous posts with its top par struggling to get fully drawn.
- Clicking Full List on another base than the one from step 1 will display a correct list, doing so after step 4 will fix the list at the base from step 1.
- Once a bad list exists at a certain base you can exit to main menu reload a prior save from the given campaign prior and the glitch will persist. At least as long as the save was taken is on the same turn I haven't checked persistence across turns.
And now for the crash
Method:
1. Click on a base with at least 2 LCUs ( My test sites were Madrid and Burgos)
2. Click
Full List
3. Exit full list
4. select a unit unit from the bar at the bottom of the screen.
5. Click
Merge
6. Move at least 1 device to the other unit but do not press
excecute Merge
7. Press
exit
8. Press
Full List
Now a crash should happen.
Both issues are fully reproducible from either a clean a clean start of campaign at T0, but apart form a bunch of crash reports is also a save file I was mostly in the ziped folder.
PS. Finding bugs in someone elses' work is much more relaxing then in ones own. Especially when it is that someone else that has to deal with them.
PPS. Fulfilling squashing.