mouse pointer doesn't change on links in firefox 128.0esr

Hello:This occurs in openSUSE 15.5. I installed firefox 128.0esr. -------The mouse pointer doesn't change to a hand on hovering links in firefox 128 esr.-------I use the default X windows mouse theme (by setting no theme in KDE control center).-------I use KDE3 desktop.-------The mouse works normally with previous firefox 115 esr.-------What is the cause, and how could I fix?-------Thanks,-------Istvan-------ps: The -------s are for separating lines.