Magento unable to fully read themes [Magento 2.0.5]

[AngelsDustz]

Steps to reproduce

1. Create a new theme in app/design/frontend/[Vendor]/[Theme]
2. Create a layout.xml and theme.xml
   3.
   a. When trying to select your theme in Page->Theme you will get the default Theme name
   b. When trying to select a layout from your theme in Content->page you are only able to select the default layouts.

Expected result

1. Create the files, configure them and select and use them.

Actual result

1. The Theme will get default values. (theme.xml and layout.xml not being read)
   (The theme does get detected though!)
2. The Theme has no layouts.

I managed to fix this by reverting to version 2.0.0
During all of this I tried any thing I could to get it to work;

• reset cache
• edit vendor files (This actually gave some results, but really weird ones)

During all this the Mode was set to development.

If anything this needs some research.

[mazhalai]

@AngelsDustz this looks like the duplicate of #2797

[AngelsDustz]

@mazhalai By the looks of it (s)he wants to include/load a Theme using composer as where I tried to create one.
Also my themes were added, it simply didn't read beyond the fact it saw the folder, theme.xml etc. was being ignored.

[mazhalai]

@AngelsDustz did you have a chance to try it on 2.1.0-rc1?

[AngelsDustz]

@mazhalai Sorry I didn't after we saw it didn't work/gave problems on 2.0.5
we reverted back to 2.0.0 A.S.A.P.

[mazhalai]

@AngelsDustz regardless, we have created MAGETWO-53544 to investigate.

[skovalenk]

Hi @AngelsDustz
I have checked MAGETWO-53544 on Magento 2.1.0-rc.
Seems problem was fixed. This bug was also related to this one: #519