It was broken so long I honestly wouldn’t have been surprised if news surfaced that Discord was taking back-handers from Microsoft under the table to keep it broken.

Tech companies are fully capable of being lazy for free. Fixing this takes dev time from other work that brings Discord money so doing this costs them, especially considering that Linux userbase must be rather tiny. 99% of software companies don’t give a shit about making quality product and will always try their hardest to do as little work as possible while making as much money as possible. If fixing a bug will cost them more than potential profits from making it work then they won’t fix it.