Hi again,
Just since I didn't include this in my previous reply and there are concerns about this : if you do send me your HAR file, make sure you reply privately to my message, so as not to make the file publicly available.
From the arrow pointing down at the top right of my message, you can choose "reply privately to owner". Please make sure to reply that way. I'll still post the updates to the issue here, so that other people having the same issue can see the resolution.
Cheers