[ProtoAES256]

For a circumvention method, I suggest using the following script

javascript:var r="html,body{overflow:auto !important;}"; var s=document.createElement("style"); s.type="text/css"; s.appendChild(document.createTextNode(r)); document.body.appendChild(s); void 0;

I bookmarked the script and click it whenever uBo blocks the site popup but not enabling the scroll. It works most of the time in my quite long usage.

Though I agree that we have a bigger problem than the scrolling on hand.

[efreak]

This can be automated with stylish (or fork) or tampermonkey. I've used to run a userscript on every page to prevent it from intercepting ESC, thanks to squarespace making ESC navigate you away from the current page to the site login. Thankfully the site I used to visit is no longer hosted by squarespace and they seem to have gotten it together to stop intercepting it elsewhere.

[ProtoAES256]

This script sometimes break the normal flow of interactive type pages, so I don't think it is that applicable to all pages. Great thinking though!