Getting an error trying to download files from element web

Description of the issue:

Cannot download files from Element Web ( due to this error:

Error while parsing the 'sandbox' attribute: 'allow-downloads-without-user-activation' is an invalid sandbox flag.
getManagedIframe @ FileDownloader.ts:50
get iframe @ FileDownloader.ts:84
download @ FileDownloader.ts:93
downloadFile @ MFileBody.tsx:145
(anonymous) @ MFileBody.tsx:186
await in (anonymous) (async)
Rb @ react-dom.production.min.js:52
Xb @ react-dom.production.min.js:52
Yb @ react-dom.production.min.js:53
Ze @ react-dom.production.min.js:100
se @ react-dom.production.min.js:101
(anonymous) @ react-dom.production.min.js:113
Jb @ react-dom.production.min.js:292
Nb @ react-dom.production.min.js:50
jd @ react-dom.production.min.js:105
yc @ react-dom.production.min.js:75
hd @ react-dom.production.min.js:74
push.exports.unstable_runWithPriority @ scheduler.production.min.js:18
gg @ react-dom.production.min.js:122
Hb @ react-dom.production.min.js:292
gd @ react-dom.production.min.js:73

Exact URL of the website in question:

Did the issue present with default Shields settings? (yes/no)


Does the site function as expected when Shields are turned off?


Is there a specific Shields configuration that causes the site to break? If so, tell us that configuration. (yes/no):

Haven’t figured that out.

Does the site work as expected when using Chrome?

Yes. This version works fine: Version 101.0.4951.64 (Official Build) (64-bit)

Brave version (check About Brave):

Version 1.39.101 Chromium: 101.0.4951.64 (Official Build) unknown (64-bit)

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