It would be great if you could add an example project and many details as possible about your device to that answerhub bug report.
(I’m going to double check this) it’s working on my S7 Edge (SM-G935F, 6.0.1, Oculus System Activities version: 1.0.2.4) however I can see with my released games there are a few S7 Edge users having crashes and I’m unable to reproduce or find the cause which leads me to believe it’s a specific device / software compatibility related problem. -> perhaps the exact issue you found as I do have some masked materials!
PS: here is a dead simple project with a masked material that works fine on my S7 Edge:
http://en.file-upload.net/download-11501905/maskedMaterialTest.zip.html
(download link is the smaller blue download button don’t get tricked by the ad 
)
Could you confirm you get a crash on it? Thanks!