@Archidoit I'm not able to reproduce either on Demo or Testing.
I tried with several entities (Malware, Intrusion Sets, IOCs), going into the entity knowledge tab, creating a relation from there. Going back to the entity overview (went to both each time) and everything was displayed well. Can you let me know where/which case did create this issue for you?

Exemple of steps to reproduce: @nino-filigran

• On the relationships tab, click on a relationship of type 'uses'
• Add a 'linked entity' of type 'indicator'
• Go to the indicator overview

To be clear, about the repro case, please use the "linked entities" as shwon in the screenshot, not the one in the list:

I've been able to reproduce. I think there are couple of things going wrong in here:

• when selecting the + on linked entities, the look and feel is still the "old one": this is not to be fixed here, since it's a feature not a bug
• when selecting an indicator, the original entity that you want to create appears in an odd way (it looks like we're using a representative), while we should the From Entity exactly like the Target entity
  
• when going to the indicator's page, it looks like a relation has been created, but the "to entity" is a relationship type uses instead of an entity (I my case it was supposed to be an intrusion set)
  
• when going to the indicator's knowledge tab, the relation does not appear (is it because the relation is not vzalid, since we're creating a relation that points to a relation?
  
• when clicking on the relation, same as the begining, it's odd: