I can't be completely sure when this happened but it was within the last couple of Quicken updates. Currently using R29.22, Build 27.1.29.22. and Windows 10 x64.
Before there were no categories listed as "..." . But now in the column for some of the budget categories they are displayed only as ... not the category name. In the attached screen shot the category should be Plumbing-Sprinklers. Another is Water-Irrigation-Sewer.
The workaround seems to be to change Plumbing-Sprinklers to Plumbing - Sprinklers and Water-Irrigation-Sewer to Water - Irrigation - Sewer.
Strange new behavior, it seems that for some arbitrary reason a string (word) now has a limit of how many characters it can have. Where Plumbing-Sprinklers is 19 characters Plumbing - Sprinklers is 8 the 1 and then 10.