see screenshot - Does this material look normal to you?
Notes:
i am using SU 22.0.354 64 bit on windows
I have never experienced this before
Is this a bug?
It seems if itâs forgotten to behave like a texture instead of an image. Was the jpeg inserted as image, first?
How did you applied it to the other faces? was it grouped already, or did you group it afterwards?
Can you upload an example file where this is happening?
It might be related to this bug:
Hereâs how to reproduce:
Open a new (blanc) file.
Import an image and draw an edge.
Group both entities.
Draw a face, choose the paintbucket tool.
Sample from the image Group and apply to the new drawn face.
Check the 'In Model collection â of the Materials panel.
Set Face style to âHidden Lineâ
Thinking a loud âŚMy guess is that material applied one of the Tag and the Color by Tag is enabled??
Perhaps sharing your model helps to someone check itâŚ
EDIT:
I was able to âsimulateâ something similar by creating a material from random picture and applied to Tag and also to faces (It is on SU2021, currently I have no access to my SU2022 )
very interestingâŚ
The OP did not have âColor by Tagâ enabed, though, but I can apply a texture to the Tag color, too!
Hope they wonât fix the bug 
I used a download image. But forgot how exactly i applied itâŚ
Tomorrow i will try to recreate it and upload the file as requested by the forum members.
Your response it helpful in learning more about the intricacies of SU!
Textures donât show when on hidden line. As you can see the texture, it is either an image or itâs color by tag.
Discovered something interesting when testing this. If you have a texture with some transparency, the transparency is kept when in hidden line. That would let you do X-ray like effects in selected areas.
Interesting difference with Windows and Mac, at least it seems that way. On Windows you can load an image to be the tag color, on Mac you can use any texture that is already in the model.
That looks dangerous to me.
You just have to keep one hand in your pocket. 
Letâs hope this getâs no attention from the developers, it might turn in to a useful feature
Like clipping, this might have some practical applicationsâŚ
It must be something like the same as using an image in a group as a texture. But that doesnât show up in the Materials browser, as it does in the first screenshot in this thread.
Attached is a super simple test model (version 2022) and the texture file.
Model setup description:
My observations:
The fix that I found:
Thanks for your interest!
I love this forum
That breeze block texture is indeed behaving very oddly.
Interesting, On Mac I am able to load any texture I have access to in the material picker, including ones saved in custom folders but not in the current model. This opens the door for some fantastic options in semi-transparent texturing while in Hidden Line. Also interesting is that the applied tag textures do not appear in the 'in-model" list but do persist through a purge and a save.
So it was an image from a group used as a material. Itâs indeed a known bug or feature.
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