Yes, I have submitted a crash dump recently, but I do not know if I am looking in the correct log file and where to find the PC username that is within it.
Though I did find this around the time that I had crashed inside said log file, which may be the cause of the crash. The crash log time seems to be 1 hour behind the time on my PC too.
I recorded me replicating this.
These are the coordinates which I had done this at.
Berlyn: -639N 2,166E (Altitude: 82)
EDIT: I would also like to note that I first discovered this not from rapidly clicking around the shop stand, but randomly seeing negative numbers and being stumped with a crash.
The crash only happens when I click the negative number, it does not happen when the negative numbers appear.
I believe there could be some correlation between the “Trying to add too much” message and the negative numbers. I am just assuming, but I believe that the game cannot give a character a negative amount, which would display “too much”.