Continued ContributorHi v-qiuyu-msft,
Yes, easy...I can still reproduce it, using this .pbix file, and using the latest version of Power BI Desktop.
Notice that word wrap is on, for the column headers.
And the first column (OrderDate) and last column have had their widths reduced, so that the column headers take up two lines. When you open up the file, OrderDate looks like this...
After opening the file, follow JUST these steps:
1. Scroll the table all the way to the right.
2. Change the width of the last column ("ReallyReallyReallyReallyReallyLongFieldName"), so that it is much wider, and so that the column header no longer takes up two lines. Make it just one line. Notice how the height of all the column headers decrease, once that one no longer takes up two lines.
3. Scoll the table all the way to the left. Notice how the height of the column headers stays the same, and so the "OrderDate" column header now looks like this: