Mikael It does that at the beginning yes, but it did get set back to 100. At the end, see your logs.
At 17:58 your time (server is UK timezone):

Thinking about it, perhaps our intention was to set the discharge_stop_soc value to 12. Not the charge_stop_soc. We'll have a look.
Shouldn't affect anything for you now though, as when you are running a forced discharge, you cannot charge at the same time.
And it now gets set back at the end to 100.