I've noticed a bug sometimes when I'm typing in the formula bar for a measure or calculated column. Sometimes when I begin to type my formula the text won't automatically appear with suggestions. I have to close Power BI desktop and reopen it. I've only noticed this after the most recent Power BI destop update. They supposedly made some changes to the DAX Editor to fix some bugs.
Unfortunately, I couldn’t reproduce this issue. May I know whether this issue takes place in the latest version of Power BI Desktop? If you try with the latest one, will you see this issue either? Did this issue happen when you input specific dax function or and random function?