I have installed an earlier version of LO (e.g. 22.214.171.124) and have the shortcut to start it on taskbar. When I install a newer version (e.g. 5.4.0 final), the taskbar icon turns into a blank page and after clicking it, the dialog says that the shortcut is invalid. I have to manually put the new icon from desktop to the taskbar.
Expected behavior: the taskbar icon stays functional after updating.
*** This bug has been marked as a duplicate of bug 76131 ***