Note keeps disappearing

It doesn't matter which note it is; if I have it open, switch to another window, and switch back, all the content is just gone. If I reload the app or switch to another note and back, it's all back again. It just stops rendering the note somehow. I can write in the note when it's empty, but if I do, it overwrites everything that was there previously. I have the latest version of Obsidian and no fancy plugins or anything. The only plugins I have are:

• Various Complements
• Readwise Official
• Tag wrangler
• Calendar
• Voicenotes Sync

I use iCloud for syncing across my devices, but I never had this issue before, so I'm not sure what's happening here, as the note is obviously not gone; it just stops rendering if I have it open for a while. I just tried disabling all my plugins, and the problem still persists. So I think it's down to something local, Obsidian itself, or iCloud.

Edit: I think I found the issue. I had to disable Optimize Mac Storage in iCloud settings as outlined in this help article. I think that resolved it. Pretty weird though since I haven't touched that setting and never had issues before. Hope this post helps others who might have the same struggle.