==Steps==
1. Set up the following (as 'page' resources)

• page1 (complete when viewed by student)
• page2 (visible when page1 is complete)
• page3 (no special conditions)

2. Log in as a student
3. click on the 'page1' link in the course, then look at the navigation block.

==Expected result==
Navigation block looks like this:

• page1
• page2
• page3
  (page2 should be visible at this point as the condition for it being available (page1 being viewed) has been met)

==Actual result==
Navigation block looks like this:

• page1
• page3
  (page2 not shown)

Clicking on page3, clears out the 'get_fast_modinfo' cache and correctly updates the navigation block to this:

• page1
• page2
• page3