Hi Abbot,
thanks for reporting this. To be honest, I'm not sure what could cause it. I haven't experienced it myself so far and it looks like there are no easy ways to reproduce it.
Are you playing the game on Android or iOS?
What could bring some insights would be your current save folder, so that I could have a look at it and try to reproduce the issue here.
Depending what platform you use, I can post a description where to find this data.
Thanks for your help! :-)