Show images "From Cache" for a page is reset to "Always" after browser restart
The per-page setting "Load Images" ("Toggle images") resets itself to the default "Always" after the browser is restarted (1.7.735.46).
I'd expect the tab preserved this setting ("No images" or "From Cache") for the page (which is opened in the tab) even after the restart.
PS: I hope this handy feature is being redesigned to make it more friendly (as suggested ~2 years ago), so the fix may be added to the to-do list
@AntonK: That's right. We do not have persistent page actions settings yet. Any setting from Page Actions will clear when you close the browser.