Option to show cached version of page when Firefox on Android starts w/o internet access?

When Firefox process starts cold, and when internet connection is not available, Firefox displays Server Not Found error page instead of loading a cached copy of a file. This is really frustrating for example when you find something to read, then send Firefox to background, and try reading it on the metro, only to encounter a Server Not Found error.

Today I discovered a hack that could make it work. I wonder if there is any option to just have Firefox on Android display cached version, maybe with a warning that that’s a cached copy?

I just found the solution to this, buried in about:config. Set browser.tabs.useCache to true. Will add a bug report to set this default true or at least include an option in the settings interface.

Also, it’s weird that this isn’t on by default.