I have this issue with parameter descriptions.
The tooltips are visible in modify mode, e.g.:
but If I go in edit mode, the description field is empty:
If I connect to the .pbix file in Tabular Editor, the Description attribute of the Parameter object shows the proper text:
If I edit it, the change is saved in the 'local' copy of the datamodel in Tabular Editor, but then PBI can't save the changes in the .pbix file.
If I export the .pbix as a .pbit, then the descriptions completely disappear:
I tried the latest version of Power BI Desktop and can see the description. You may leave a comment on GitHub.
I confirm the disappearance of parameters description. I have the same issue.
Version: 2.87.1061.0 64-bit (November 2020)
We are having the same issue as well. Only the bottom one of six parameters the description when in the Power BI Service Only