I was able to create this issue and Identify that the problem goes way, when RESTOCK PARTS Mod By @Netea is removed.
[1.11.1] Restock - Revamping KSP's art (KSP 1.11, Jan 31)..
I didn't think this was the exact same as others reported with attachment, merge to any outstanding Item if needed.
Attached logs"
ts2446-1.11.2-01.zip
Here is normal:

Here not so much:

The item is a single panel with a sym connected duplicate to each side then resized!
just thought I would let you know I am not sure whom could resolve this as, without RECALL PARTS the problem goes away so maybe it on them.
thanks
Jammer
I was able to create this issue and Identify that the problem goes way, when RESTOCK PARTS Mod By @Netea is removed.


[1.11.1] Restock - Revamping KSP's art (KSP 1.11, Jan 31)..
I didn't think this was the exact same as others reported with attachment, merge to any outstanding Item if needed.
Attached logs"
ts2446-1.11.2-01.zip
Here is normal:
Here not so much:
The item is a single panel with a sym connected duplicate to each side then resized!
just thought I would let you know I am not sure whom could resolve this as, without RECALL PARTS the problem goes away so maybe it on them.
thanks
Jammer