Unpoly Links + Browser Back Button not triggering replace

[jakedowns]

using latest unpoly release unpoly@0.37.0
and jquery 2.2.4

I have some up-target / up-dash links which correctly insert a history object into the browser's history stack when followed, but when i push the browser's back button (chrome) up:history:restored is never emitted

when i bind my own listener to window.popstate and inspect e.originalEvent.state is appears the state.fromUp flag property is missing

[UP] Ignoring a state not pushed by Unpoly

even when i explicitly set up-history attributes on the links

i'll work on putting together a reduced test case...

[jakedowns]

hrm... works in reduced test case, i must have some other conflicting code.
closing.

[jakedowns]

Update: I was clobbering window.history.state.fromUp with my own history.replaceState when removing utm parameters from the address bar

checking for and retaining .fromUp flag resolved the issue