Make expression text remain the same size, regardless of whether or not is is "Active"
When clicking on the expression text to make it active, the font size changes which shifts the text around. Once this happens, I again have to find the part I was trying to click on in the first place. The more text there is, the worse this problem becomes.
This also isn't specific to expression text; the same issues occur when renaming layers, as well as just about any other UI element that allows you to edit text.