Anyone have an issue of rendering page block section item help text in LEX (apex:pageBlockSectionItem helpText="blah blah blah").  As soon as LEX is enabled the bubble disappears.  Styling with lightningStylesheets is of no help
 

Hi All

The 'Define Forecast Rollups and Default Date Ranges' unit is giving me the following error when I have done exactly what is asked in the challenge, hence an apparent error in the Trailhead checking process:
Challenge Not yet complete... here's what's wrong:
Couldn’t find default forecast display period 'Monthly', starting on '1 month ago', display '4 months'. Please double check the instructions.

Is there some apparently irrelevant setting I need that is not specified? It's not as if this is a complex unit!

Thanks
Keith