Multi-Download always missing files

Is it just me, but is anyone else having missing files when downloading a folder of any sort? I've been trying to download my OneDrive for an offline backup.

However, keep on getting zip files with files missing, and the last file is always corrupted. It doesn't happen all the time, but is guarenteed when a folder has many (more than 50) files or you're running multiple downloads in parallel.

Short of downloading all files one by one, is there any solutions to this? Or how do I report a bug?

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I also can't use the OneDrive app as I'm not using Windows, and the app keeps on getting into a corrupted state (on my Windows device) and for some reason always fails to completely sync my files even though it says it's up to date.

(There'll be a few files here and there that will have 0x8007016A: The Cloud File Provider Is Not Running or it'll try to open but then stick at arbitary points during the transfer and never complete)