@LFritze
Have you tried the solution here:
Also, we once had an issue where the Main workflow wasn’t displaying after upgrading because one of our conditions had an extra space in it. We simply replaced error is_ nothing (extra space underlined) with error is nothing and the workflow started working again. Allowing the extra space was an error in previous versions that had been patched in the update.
Anil_G
ashokkarale
jinal.shah
Gautham_Pattabiraman
postwick
chandreshsinh.jadeja
vrdabberu
Ajay_Mishra
sven.wullum1
Vyshnavi_Nalumachu