may you write me what you mean by "placeholder"?

in the middle screenshot is the Description field (green recktangle) if i write a letter/word in this field it is displayed see right screenshot "Text" together with "Details"

perfect!
if this descriptionfield is empty, needless trackinfos are added

, see left screenshot.
Trackinfos are available in each trackpoint.
So my wish/idea is a "placeholder" in Description field (green rectangle)
it should work like a fake, for example you insert permanent a "white star" unvisible for user and locus believe it is an text

I hope this is more understandable for you.
About point - fact that title with icon and name has grey background means, that point is only temporary
ok, grey temporary
If i take a lock to "info" of one trackpoint of a recorded track, i see the tradi icon
issue in Locus when point attached to track is marked as a temporary.
it is not a point attached to a track, it is a trackpoint, see short clip