The Bootstrap 5 upgrade introduced a double class attribute on the dropdown-menu for selecting rows per page from SQL search results. Combining the classes will fix it.
Created attachment 170762 [details] [review] Bug 37746: SQL reports: Double class breaks rows per page selection This patch combines double class attributes in order to allow the event listener on the element work correctly. To test, apply the patch and run a saved SQL report which will return more than one page of results. On the results page, click the "Rows per page" menu and select a new value. The page should reload and display the number of results you selected.
*** This bug has been marked as a duplicate of bug 37745 ***