Can't use discrete month anymore: Enum Mapping not found for: month

[ladataviz]

It's no longer possible to select a discrete month date in extensions.
ServiceImplBase.js:23 Uncaught (in promise) r: internal-error: Enum Mapping not found for: month

This is a new error in Tableau 2026.2 (i'ts working well on previous versions)

Version information:

• Tableau Desktop and Online 2026.2
• OS: Mac Os

Steps to reproduce (please include a code snippet, if possible):

1. Using the Line, Area Bump, Streamgraph, or KPI Extension
2. Put a Date in the Time mark
3. Select Month (discrete)
4. See error

Screenshot

[ladataviz]

Same issue on the Tableau Table extension. You can't use a discrete Month.