'prevContext' on hash change not set properly

[Thams]

Hi,
ctx.page.prevContext not set on hash change in current path.
This is not working between hash change between hashes and from path to hash.

For example:

• From /profile to /profile#/details. Here previous ctx for /profile not set to ctx.page.prevContext
• From /profile#/details to /profile#/settings. Here previous ctx for /profile#/details not set to ctx.page.prevContext

In this above transition both ctx and ctx.page.prevContext are same.