HTTP Snap Query parameters issue

So, I have a strange issue with the HTTP snap that I have huge trouble solving.

When validating the pipeline I get an error saying query param is not allowed for every query parameter provided in the query parameter fields.
But when I copy the request string from HTTP Snap debug and paste it into Postman, the request works as expected.

I've tested it both using query parameter fields and by manually mapping the URI with encoded values where appropriate.

The request string from debug looks like this (Identifiers have been replaced with *****):
/rest/organizationalEntityShareStatistics?q=organizationalEntity&organizationalEntity=urn%3Ali%3Aorganization%3A********&timeIntervals.timeGranularityType=DAY&timeIntervals.timeRange.start=1715844351774&timeIntervals.timeRange.end=1747380351774&ugcPosts[0]=urn%3Ali%3AugcPost%3A***************&ugcPosts[1]=urn%3Ali%3AugcPost%3A**************&ugcPosts[2]=urn%3Ali%3AugcPost%3A**************&ugcPosts[3]=urn%3Ali%3AugcPost%3A**************

Does anyone have a clue what the issue may be or what I should do to troubleshoot it further?

Thanks!