aost logging breaks video on website

[ghajini]

Prerequisites

• I verified that this is not a filter list issue. Report any issues with filter lists or broken website functionality in the uAssets issue tracker.
• This is NOT a YouTube, Facebook or Twitch report. These sites MUST be reported by clicking their respective links.
• This is not a support issue or a question. For support, questions, or help, visit /r/uBlockOrigin.
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue.
• The issue is not present after disabling uBO in the browser.
• I checked the documentation to understand that the issue I am reporting is not normal behavior.

I tried to reproduce the issue when...

• uBO is the only extension.
• uBO uses default lists and settings.
• using a new, unmodified browser profile.

Description

using
deltabit.co##+js(aost, document.createElement) breaks video on website

A specific URL where the issue occurs.

https://deltabit.co/52tiyuhsq52y

Steps to Reproduce

1. add deltabit.co##+js(aost, document.createElement) to my filters
2. visit website

Expected behavior

video on website not broken

Actual behavior

video on website is blank

uBO version

1.59.1b11

Browser name and version

opera stable

Operating System and version

win 10

[gorhill]

Issue is caused by the site's code using deprecated RegExp.$1. Scriptlet's use of regex overwrite the $1 static property. Possible solution is for the scriptlet to save/restore these deprecated properties.

---

Save/restore won't work, as per documentation:

The set accessor of each property is undefined, so you cannot change the properties directly.

Not sure it's worth doing something about this, the site's code will break anyways once those deprecated properties are no longer supported.

[ghajini]

ok, i will close