I think that’s possible. Normally I would be reluctant as using spaces rather than css for to position text elements causes complications for translations, especially RTL languages. The space you see on the display the result of a margin on the span element that contains the years and brackets. But in this case (so far) I can’t see anywhere else where it is used exactly like this, so it should be OK to add a space on both sides of the bracketed section to make it work the same in either direction. However, if I do come across a use I’ve missed I may need to revert the change.
But all being well this change will be included in the next release.