Steam forgets autologin password and launch options for all games if installation drive runs out of space

[Yetoo1]

Your system information

*System information: https://web.archive.org/web/20200417043238/https://pastebin.com/JTX64Wje

• Steam client version (build number or date): 1586022601
• Distribution (e.g. Ubuntu): Debian
• Opted into Steam client beta?: [Yes/No] No (Although, this has also occurred on beta on another system)
• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

Sometimes my system runs out of drive storage and I often have steam running when this occurs. After freeing space, the subsequent launch of Steam will yield the password I use for auto login and launch options for all games missing. I expect the the aforementioned data not to be deleted/missing on a subsequent load of steam after freeing storage space when previously full. This is annoying since there are a dozen or so games that I have set custom launch options for and this issue adds another step to correct before playing them.

Steps for reproducing this issue:

1. Run out of storage space on the drive with steam installation.
2. Free space.
3. Close steam
4. Open steam

If that didn't reproduce try closing steam before freeing space instead of after.

[ghost]

Same happens to me even if the drive isnt full after the latest update, the registry.vdf gets overwritten