I’m reopening « Reboot / restart after call » because I encounter exactly the same problem.
I’ve the Fairphone 2 with open OS 18.04.1. This bug is relatively new (maybe since the last upgrade in april?), but I’m sure I never have this problem before march of this year. I try to change the top module in april (because I found it was often a bit hot) but it changes nothing.
Does any one encounter the same problem, has a solution?
Thank you very much.