I have set my font to Arial and the size to 10 in my text box in Power BI Desktop.
When I swich between the tabs, the formatting is reset (and default is shown).
I have recorded the steps I have done. The steps can be found at this link: link
I have this issue too - it is very annoying and makes reports look sloppy. No matter how many times I change the formatting, once I leave the tab and go back, a section of the text box reverts back to the default formatting. This happens across models (aka: it is not isolated to a single corrupted .pbix model)
I hope they fix soon.
I am having the same issue. It appears to be related to having bold text in the body of text. I can get away with a certain amount of bolding but then there is a tipping point. If I keep the bold under a certain amount, I am fine.
No this is not a fix. It is a work around on a bug.
Please fix this.