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theo_s's avatar
theo_s
Frequent Visitor
1 month ago

PowerBI Online - Line/ Area Chart Issue after the July Update

After the latest update I am having this this issue on the online version of PBI where if I have a single measure in the y axis and some category in x axis (for example months) I am not able to chang...
Need Help
Gautam_Kumar01's avatar
Gautam_Kumar01
Post Partisan
1 month ago

Hi theo_s 

I am also seeing the same issue after the July 2026 update in Power BI Service.

This is a known UI bug with Line/Area charts when you have "Single measure + Category axis".


When "All" is selected under Format > Data colors, the color picker gets greyed out and defaults to blue.
It still works fine in Power BI Desktop and for reports published before the update.

 

Workarounds that are working right now:

1. Temporary Fix: Add a Legend
Drag any field to the Legend well. Now you will get separate series and the color option will unlock for each. After changing colors, you can remove the Legend if you don't need it.

 

2. Desktop Fix:
Change the line color in Power BI Desktop and publish. It will keep that color in Service. But if you edit it in Service again, it will reset to blue.

 

3. Use Conditional Formatting:
Format > Data colors > Advanced controls > Conditional formatting based on a field.

This looks like a bug introduced in the July update. I have also upvoted and reported it on the Fabric Ideas page.

 

Hope Microsoft fixes this soon in the next update.