Bernd: about the connecting stroke of "g", I think it was made too long and the "a" was then written over it instead of connected to it. You can see exactly the same thing happening in "tar" before tere/cere. So this writer seems to have been in the habit of making (too) long connecting strokes when he decided to use one at all.
I must say that I've become less and less convinced by visions of Pellingesque phantom parades of plonkers "fixing" each others' writings. "Oh no, someone messed up their marginal note, let me fix it". Clearly one scribe was enough to obtain the mess.
The long connecting stroke with a letter then written over it does remind me of something though. Let me sit on a bench and think about it.
I must say that I've become less and less convinced by visions of Pellingesque phantom parades of plonkers "fixing" each others' writings. "Oh no, someone messed up their marginal note, let me fix it". Clearly one scribe was enough to obtain the mess.
The long connecting stroke with a letter then written over it does remind me of something though. Let me sit on a bench and think about it.

