# Canvas Groups

## Rotated GuiObjects

When clipping UIObjects from a CanvasGroup, the engine creates a boundingbox around it to test if it's inside the CanvasGroup frame. However, the bounding box does not also get rotated.\
\
This means that if you have rotated UIObjects near the corner of the frame, there is a good chance it will not render at all.\
\
Bug Report:\
<https://devforum.roblox.com/t/canvasgroup-clipping-doesnt-account-for-rotated-shape-of-frames/2433627>

***

## Out of Memory = Black CanvasGroups

As you know, textures can take up a lot of memory, even if most of their contents are empty pixels (0,0,0,0). If a device does not have enough memory to allocate for a CanvasGroup texture, it will render pure black instead of anything meaningful. There is currently no way to check for this, so be careful.