Jira Service Desk 4.12.2 problems with web fragment servicedesk.portal.subheader.my requests

In the latest version of the jira server we are having some UI compatibility issues. The most complicated to solve so far is being what we found in the Jira Service Desk.
In the customer portal on the my requests page we have a button that was aligned to the right of the screen, but with the latest version of the jira server this has not happened. We now have all the elements aligned to the left. I was analyzing the html of the page and before that the element available to the thirty party members had the width of the page width. Currently it is just the size of the element that is added there.
What solution is there at the moment to be able to align the elements to the right of the page?