Could someone with Mega please try this and this from above? Second part is a bit technical, but might be your “workaround”. Filing an issue will be good for tracking (and maybe planning) regardless, and if it turns out that only a library update is required, these seem historically to be picked up and done relatively quickly.
I’d note, though, that Mega seems not too happy about Duplicati using it this way via a third-party library, so Amazon Cloud Drive discontinued (which will hit Duplicati soon) could someday hit certain uses of Mega…