Hello,
We have made fixes of the PHP and CSS files. Problem was related to preventing false clicks while the user just clicks on the filter button (before this action opened the filter and after that opened the product that was over the filter). But it seems that the fix of that issue caused the problem with click after the price filtering. So, we improved the code to avoid it.
Fix of this issue will be included in 6.3.6 theme update.
Regards