According to this post this issue seems to have been resolved a few years back, but I having it again.
- Clicking
Set Plan view to viewport
ignores Blocks when doing zoom extent (I have tried to insert them both as linked and embedded and linked blocks). In the image bellow left you can see the result of the command on the plan view. - Blocks are not sectioned even thought the section properties have been assigned. I have tried assigning them both in the original file and to the imported block. In both instances the block is not sectioned on the plan view. Also, in the perspective view the block shows as a two planes and a few lines.