I don’t know why but the original trains on the new dresden still say s bahn Which is not correct and I feel like this would be an easy fix but they didn’t fix it in the recent patch
This is realistic, the RE 50 operates with the same Dostos as the S-bahn, which is why they have the same S-bahn logo on them. In real life the Dostos on RE 50 are only there to replace Talent 2 sets which normally operate the RE 50.
Generally the S-Bahn and Regional Dostos are used as a common pool, it was similar around Leipzig before the city tunnel opened.
Regional trains out of Dresden also used them if the line is equipped if Doppelstockwagen. These S Bahn Dresden VVO sticker Doppelstockwagen can be used on Main Spessart Bahn Aschaffenburg-Gemünden even though those use Bayern and RMV Frankfurt Am Main Wiesbaden stickers.