Labels for wires / ensuring text stays on top of wires?

I am trying to add labels to all my wires and it seems to work to a certain extend using text-elements:

But then sometimes, the text just disappears behind the wires:

And it does not appear to be possible to make it visible again. I tried Raise and Lower → Bring to Front on the text elements and Send to Back on the wires, but that just seems to make it worse, hiding all the text behind the wires.

It is very difficult to maintain this way. Not only because the labels keep hiding behind the wires, but also because the labels don’t move when the wires move.

Any advice on how to deal with this?

Here is my project file:
ShowboxInterceptorFor3DCase.fzz (232.2 KB)

Edit:

One more thing that I forgot to mention is that sometimes or for some wires / text elements, the Raise and Lower options are completely greyed out: