OK, So I read somewhere on Instagram, that nobody questioned Anurag's loyalty during Komo track then why are people questioning Pre's loyalty when she was crying and cupping Anurag's face.
I think it's Because at that time it was shown that Prerna is real wife of Anurag. The CVS gave money to Pandit to lie to audience 
I think that's why audience didn't mind when Anurag used to sometimes come near or hold Pre during Komo track. That's why nobody questioned his loyalty. At that time nobody (audience) accepted Komolika as his wife.
Here the reason , Pre cupping Anu's face and hugging feels odd is because she is Bajaj's wife. I know it's a deal marriage, but nevertheless it's a legal marriage which holds valid in court. Nobody here expects her to love Bajaj. If she hates him, then rightly so. He took advantage of the situation and married her . If she chooses to live her entire life with Anurag's memories even then ppl will support her.
. People are questioning Pre's loyalty because she is Married to B and being lovey dovey. OK, I know it's an impulsive action at that time. It's not like she planned to cup Anurag's face or hug him. She saw him in that state and couldn't control her tears. I am ready to cut her some slack but she needs to be careful.Problem here is they are glorifying something wrong. Slapping each other or crying on your ex's chest after marrying someone else doesn't reflect well. Audience don't like Glorification of EMA. Marriage is sacred. Be with Anurag if you want but please divorce or leave Bajaj before touching Anurag. I hope writers are careful while writing Pre's scenes because she is the one who gets bashed/criticized from both the fandoms.
Some people are debating what's wrong in hugging Anurag since she has no physical relationship with Bajaj. I believe, when you are married to someone you don't go around touching or hugging your exes, This has nothing to do with whether you have physical relationship with your husband or not. If you are unhappy with your marriage or you were coerced in it, then please leave him. But you cannot be married to one and hug the other. This example is not for Prerna because it was not like she was planning to hug him or have an affair. That's why Pre can be cut some slack but writers need to concentrate on her now.
EDITED : on Humpty Dumpty's Color change Request 😆