Standard mining bot problems

Welcome Jan, and thank you for the report!

Reading this, an idea: Maybe it fails to interpret the text which is displayed in the inventory capacity gauge. That threshold you mentioned is close to one thousand. I remember that the EVE Online client displays a thousand separator symbol which can depend on your setup.

Looking at the screenshot you linked, your setup seems to use a whitespace character for this separator.
The reference example texts we used so far for testing were coming from this thread (We assume the EVE Online client uses the same number format for distances (Overview) and capacity (Inventory):

From what I see in that thread is that the training data so far only cover the use of comma (,) as separator.
This seems also consistent with the training data of the current version of the EVE Online framework: