Firefox: Navigation using via breadcrumb leads to broken Channel Editor perspective.

Tested o HAP VE-psp1 branch,

Scenario:
1. Login and navigate to Hippo Acceptance Project channel.
2. Click breadcrumb's Channel Manager button to navigate back.
3. Click Hippo Acceptance Project channel once more.

Expected result: Navigation to Hippo Acceptance Project channel.
Current result: Broken channel editor page.

Note that for FF on Mac OS issue is reproduced after clicking Edit button after first step.