Fix button size of a tab strip

Hello,

I’m using the tab strip to create a 3 levels navigation menu.

I would like to fix the button size to align them. Actually, the size mode is “Automatic” and I have this behaviour:

Is there a way to do that?

Thanks.

If you add whitespace to both sides of your text in the Display Name property on the top and bottom tab strip they should better match the middle one