I'm just fine on an older version of Firefox (104 esr, 32 bit) on Windows 7 (32 bit).
I have a large HOSTS file, and also running ublock. Some diagnostics show that I'm not running scripts from:
www . ezojs . com
cdn.viglink . com
A couple of cross-origin requests for g.ezoic . net have been blocked. I can post the exact details of these items if useful.
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Using ublock "element picker" mode, selecting the box "write your reply" (this is the message text entry box under the tool bar), this is what I see:
##.fr-element-scroll-visible.fr-view.fr-element
Cosmetic filters
##.fr-element-scroll-visible.fr-view.fr-element
##.show-placeholder.fr-wrapper
##.fr-top.fr-basic.fr-ltr.bbWrapper.fr-box
##.message-editorWrapper
##.message-cell--main.message-cell
##.message-inner
##.block-bottomRadiusContent.block-topRadiusContent.message--quickReply.message
##.block-body
##.block-container
##.js-quickReply.block
##.p-body-pageContent
##.p-body-content
##.p-body-main
##.p-body-inner
##.p-body
###top.p-pageWrapper