Bug Canvas elements are gone sometimes nothing can bring them back.

Hi,
Canvas elements (Raw image etc.) loose their function sometimes. I don't know why. But complete canvas becomes invisible (in scene and game view).
Nothing except making a new canvas brings them back...

 

Could be something simple, but you haven't included any details, so who knows. Things to look for:

• Did you change the scale of the canvas or the elements to something very small?
• Did you put the canvas on a layer that you aren't showing in your scene view / game camera?
• Did you change the position of the canvas or elements so they're just somewhere very far away?
• Did you assign a material to the elements which doesn't render?
• Did you add a Canvas Group and set its Alpha to 0?
• For images, did you set the image color's Alpha to 0?

Anyway, I'd recommend providing some screenshots. Show the inspector values for your canvas and some of the elements.

 

thanks but nothing above...

 

Then post some screenshots, and explain the specifics of what's happening.