Created by: iamandrewluca
When a modal is opened, body gets some padding if has vertical scrollbars.
Fixed elements on other side don't get this padding, when body has modal-open and it's overflow is hidden.
This will add same amount of padding to fixed elements, if there are vertical scrollbars.
This issue also was addressed in v4, and was fixed.
I hope this fix will get into bootstrap-sass
Fixes: #27330 (closed)