Ajax progress throbber icon overlapping the button in schedule transition page

I have added the margin-inline-start to the button, added patch for same. please review

There an example in core of this issue?

I didn't find any instance without using contrib moudle. But I found some inconsistency with the ajax-progress--throbber in configure block page. I have created an issue for same. 🐛 Claro: Spacing inconsistency in ajax progress icon with action button Fixed

Looks like this was fixed in the meantime.