[de] Only in office extension: Upper case rule at begin of e sentences doesn' t work

In the office extension the rule for upper cases at the begin of sentences only works at the begin of a paragraph. This is strange because in the standalone version the rule works well.
Example (for office extension):
Der Wagen hielt an der Bordsteinkante. der Fahrer stieg aus. (No error is detected.)
Der Wagen hielt an der Bordsteinkante.
der Fahrer stieg aus. (The failure “der --> Der” is detected)

This is probably somehow related to that rule being a TextLevelRule, as reported here.

Another problem appears only in the office extension: The missing of a blank between the dot at the end of a sentence and the beginning of new sentence isn’ t detected.