Xbox Sand Patch Grade Mastery "fully Loaded" Does Not Work After 4.26 Update

Hi,

Tier 1 mastery challenge "Fully Loaded" - Load 20 Wagons does not work on XSX 4.26. While on 4.23 I have loaded 5 wagons (training scenario?). After update to 4.26 it still stays on 5/20, even if I've loaded at least 4 full trains in both journey and scenario modes.

 

Update:
Counting wagons towards goal actually works. You just never know whether you are connected to Dovetail Live or not, no matter what green DTL icon shows. If you logout from DTL, close game, start it again, connect to DTL by entering email+password then Mastery challenges, railfan shots + drivers logbook will work for that session, until you power down Xbox. Next time you play they will silently fail. So DTL integration is as broken as it was before Rush Hour update.