I am aware of the maximum vault timeout policy setting in the portal. I want to be able to, from either Bitwarden’s cloud portal or MDM, centrally configure the vault timeout settings (among other things) for my users as a convenience to them, and to resolve the annoyance of having the vault timeout reset to 15 minutes every time a logout/login occurs.
Certain users have a very low tolerance for security inconveniences. Getting them to use a real password manager was difficult enough in itself. Having to manually put hands on each individual device for them to configure the timeout settings is an unnecessary pain, when it seems like I should be able to push out a configuration profile from MDM to set the timeout settings once and have it be done.
Not to take away from your feature request, but the vault timeout settings should be preserved through a cycle of logout→restart app/browser→login; at least this is the case with the Desktop app and browser extension. The settings would only be lost if the app data are cleared (e.g., the app is uninstalled) or if the user switches to a different device or browser.
Seems like this iOS behavior would prevent you from achieving your stated goal of being able to “set the timeout settings once and have it be done” — even if the current feature request is implemented.
I would suggest that you report this failure to retain account security settings after logout as a bug/issue on Github, and if the issue is closed because it is “expected” behavior, then open a separate feature request for this here in the Community Forum.