I hide the labels for a bunch of sliders because they got a separate label above. The layout is saved, MDP restarted, layout loaded and labels are back for all sliders which have hidden label enabled. It's not the original label but "distortion 5" instead.
To hide that label, need to enter design mode, disable and re-eneable "hide label" for it to hide. It only lasts until the layout is either reloaded into MDP without restarting MDP or after restarting it.
Possible workaround: none, because clearing the name and disable "hide label" on these controls also clears labels for identical controls on other pages.
Entered Design Mode after reloading the design