Conversation view broken by no notification rule

I have a rule that moves messages to a folder if a string occurs the subject line. This has worked fine, messages moved and the conversation view works fine in the target folder.
I then added to the rule that no notification should be shown for these messages. After this the messages moved to the target folder is no longer grouped into conversations.

Hello,

I’ve been looking into your issue and unfortunately i wasn’t able to replicate it.
I will appreciate if you send me screenshot of rule setup so we can see complete rule settings.
 Please send screenshot to: cooper@emclient.com

Best regards