[suggestion] rename wipe to "wipe/fade" (or "fade in/out" when on timeline) .. or add a tooltip with "dissolving" or "fade in/out" or "fade effect"
this is releated to this topic: https://forum.kde.org/viewtopic.php?f=270&t=161897&p=420942#p420942 when an user is unable to find fade-in fade-out effect for a tile clip.
i know that WIPE is the correct name (looking at the different effects that can be applied), but it also creates a bit of confusion