Stock 1.4 with my own resupply mod and a few experiments. I haven't fooled around with any of the internal gauges or textures.
Note the depth gauge says 90 feet, lower right corner shows 16 feet and the HUD gauge agrees.
Helm station in the conning tower, same problem with the depth gauge, the compass says north regardless of actual heading, pitometer says 12 1/2 knots regardless of actual speed, telegraph says stop. Again also affects the indicators on the bridge and the sonar dial. It's almost like whatever subroutine sends data to the internal instrumentation is not working and everything is defaulting to whatever it uses for a zero reference point.
Again happens at random times, going into port to end the patrol and start a new one fixes it. After taking those shots I went into Java to end the 3rd patrol and started the 4th one, headed straight for Malucca Sea to refit, didn't happen, then headed for Luzon Straits and refit there and checked again, didn't happen that time either.