.md file on Android suddenly blank despite file size

What I’m trying to do

All of a sudden my longest Obsidian note is completely blank and I’m trying not to panic. I am using Obsidian on Android (Graphene OS), restricted mode with no community plugins. I specifically didn’t use dropbox backup because everyone said it would lead to corruption. The file still has 250kb of data but only the title appears. I am desperately trying to recover it.

Things I have tried

Copied the .md file to my computer (Ubuntu) to check it:

  • KWrite says it has lines longer than the 10,000 limit, but when I raise the limit temporarily it displays blank.
  • Opened with less in the terminal and it thought it was a binary file, opened with random characters.
  • Did a hex dump and it’s showing all zeros!
  • Ran strings command and it didn’t extract any readable text

Rebooted my phone; no change.

Checked the file recovery core plugin; despite me specifying it to snapshot every 5 min and to keep 7 days of snapshots, and the fact that I edited the file this morning, there is only ONE backup from a few minutes ago and it is also blank just the title. REALLY disappointed in this… have no idea why it wasn’t keeping backups when it was turned on.

I feel like I’m really grasping at straws now and I feel sick… hoping against hope that someone here can help.