Project Auditor - 'Analyze Now' can result in Shaders disappearing from Asset Issues

After performing a new analysis Asset issues looks to report shader issues, but after clicking 'Analyze Now' they then seem to disappear:

New Analysis = 116 Issues
[Internal link]

Hit Analyze Now = 87 Issues
[Internal link]

Steps to reproduce:

1.  Open HDRP Sample Project
2.  Perform a New Analysis
3.  Notice amount of issues shown for Asset Issues
4. Hit Analyze Now
5. Notice the number of issues drops (all Shader issues disappear)

Actual results: Notice the number of issues drops (all Shader issues disappear)

Expected results: No change should happen

Reproducible with versions: 6000.0.34f1

Not reproducible with versions: 

Can’t test with versions: 

Tested on (OS): 

Notes:

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