I've noticed that too, it's a bug I think and it's annoying.

EDIT:
Today I'm pissed off.... I've knocked off my coffee mug all over my desk this morning at work, a good cup of coffee.
Killed my Mac keyboard at the same time, my shirt was wet of coffee... happy day!!!!

Here are the steps, this is following Jamie's post having issue installing some KF5 stuff.
So I decided to nuke my install and start from crash.
clean up operation: indilib.org/forum/ekos/525-ekos-on-mac-o...tml?start=1068#12524

New steps to get it working nicely:

Jamie could you please try:
cd /usr/local/lib/libexec
rm kauth
ln -s ../../Cellar/kf5-kauth/5.25.0/lib/libexec/kauth/ kauth

and then
brew install haraldf/kf5/kf5-knotifications

Sounds great, I have been trying to come up with a new way to get the kstars main window to stay on the bottom that doesn't involve setting everything else to stay on top, because that's hacky. I just wish they had implemented either child widgets staying on top of their parent windows or the WindowStaysOnBottom flag in the OS X version of QT. To me that seems kind of important.

ugh. That sucks

Trying these now - question: Should this let the brew install haraldf/kf5/kf5-knotifications work? Like, should I just fix and retry that, or move on?

it goes as this:
brew install haraldf/kf5/kf5-knotifications ---> BREAKS
apply fix
brew install haraldf/kf5/kf5-knotifications ---> WORKS

Why didn't it break on mine yesterday?

It also did not break on mine yesterday (as far I as remember) and I do not know why. However we now know how to fix it

ok, thanks

a weird thing - for me, that /usr/local/lib/libexec/kauth is a directory, not a link. I just want to confirm - which was it for you?

it was a directory, remove it with rm -R
I might have to edit my steps... sorry.

no prob, just wanted to make sure