Column headers based on calc column resizing themselves in Matrix

[dedelman_clng]

I have a matrix (actually several) where the values go down the rows, and the columns are from a standalone table.

The column headers/names are from a calculated column

MeasureName = var __ThisMth = FORMAT(EOMONTH(TODAY(),0), "MMM")
return 
  IF( [Measure] = "Total Year", MeasureType[Measure] & "
     (" & __ThisMth  & " '" & FORMAT(EOMONTH(TODAY(), -1), "YY") & " FC)",
      MeasureType[Measure] & "
       (" & 
       FORMAT(EOMONTH(TODAY(), -1), "MMM" & " '" & 
          FORMAT(EOMONTH(TODAY(), -1), "YY") & ")"))

Basically for "Total Year", today's month plus today's year; for the others, last month plus today's year.

"Auto-size column width" is off for all columns

When the month changes, in both Desktop and Service, the columns resize themselves like so

The two pictures are the same scale so you can see the differences (especially in wrapped text).

I can't share the original PBIX because there is too much sensitive information, but this sample pbix (click "download" to get the pbix) shows the same behavior. I format the column to look like this:

When I open the file tomorrow, the headers will have flattened themselves out like so (the dates will be different):

Has anyone else experienced this, and is there a good workaround?

NOTE: This also happens using calculation groups - I use a similar code snippet on the name of a "Time Period" calc group and it resiszes itself as well.

Thanks,

David

[lbendlin]

You can raise an issue at https://community.fabric.microsoft.com/t5/Issues/idb-p/Issues . If you have a Pro license you can consider raising a Pro ticket at https://admin.powerplatform.microsoft.com/newsupportticket/powerbi