German abbreviation in uppercase are all identified as wrong

I have myriads of uppercase abbreviations in my text. I have them all entered (in texstudio) into the dictionary as such. What I do not understand why these are labelled by LT as Rechtschreibfehler (
german speller rule). AFAIK abbreviations are in Uppercase. That is not wrong. They would also be uppercase in English texts.

LT probably doesn’t know anything about the words you add to the texstudio dictionary. You could contact the texstudio developers and ask them to modify the LT integration so that the words from the texstudio dictionary are ignored when LT complains about them.

This has been resolved by not using LT for spelling. The spelling correction of texstudio is sufficient enough for me to have the documents in good German.