@lain@palemoon it seems that your instance (i.e. lain.com) doesn't have the changes you committed. it shows this in my palemoon and last win7-working chrome:
TypeError: [].concat(...).map(...).map(...).toSorted is not a function
$@https://lain.com/static/js/app.cbe17f9c3cdc1b660f57.js:1:708171
D/s<@https://lain.com/static/js/app.cbe17f9c3cdc1b660f57.js:1:648432
D@https://lain.com/static/js/app.cbe17f9c3cdc1b660f57.js:1:648773
n/<@https://lain.com/static/js/app.cbe17f9c3cdc1b660f57.js:1:734619
d@https://lain.com/static/js/8808.d1183c92c94cb72dfdf0.js:2:531928
L/<@https://lain.com/static/js/8808.d1183c92c94cb72dfdf0.js:2:533270
A/</<@https://lain.com/static/js/8808.d1183c92c94cb72dfdf0.js:2:532357
r@https://lain.com/static/js/8808.d1183c92c94cb72dfdf0.js:2:547289
s@https://lain.com/static/js/8808.d1183c92c94cb72dfdf0.js:2:547492
I tried to palefill Array.toSorted and I got another one in your instance:
SyntaxError: An invalid or illegal string was specified
onNewRule/<@https://lain.com/static/js/app.cbe17f9c3cdc1b660f57.js:1:648977
onNewRule@https://lain.com/static/js/app.cbe17f9c3cdc1b660f57.js:1:649019
D/s</<@https://lain.com/static/js/app.cbe17f9c3cdc1b660f57.js:1:648500
D/s<@https://lain.com/static/js/app.cbe17f9c3cdc1b660f57.js:1:648479
D@https://lain.com/static/js/app.cbe17f9c3cdc1b660f57.js:1:648773
n/<@https://lain.com/static/js/app.cbe17f9c3cdc1b660f57.js:1:734619
d@https://lain.com/static/js/8808.d1183c92c94cb72dfdf0.js:2:531928
L/<@https://lain.com/static/js/8808.d1183c92c94cb72dfdf0.js:2:533270
A/</<@https://lain.com/static/js/8808.d1183c92c94cb72dfdf0.js:2:532357
r@https://lain.com/static/js/8808.d1183c92c94cb72dfdf0.js:2:547289
s@https://lain.com/static/js/8808.d1183c92c94cb72dfdf0.js:2:547492
@lain@palemoon and in the instance I'm using (i.e. miniwa.moe), pleromaFE is actually working but it is hidden by "display: none" CSS for some unknown reason, which I can use stylish/stylus/etc. to override CSS to force it to be shown and use it normally.