zooming automatically in a viewport

[cadtag]

I've inherited as-builts for a job from another outfit (bad feelings all around ), and the goal is to do some minimal changes fo a small addition and modify some drainage pipes and structures. The source drawings have been bound, so _everything_ in in the one model file, multiple phases, old existing, demo, etc etc.

my problem is, when I double click in a locked viewport, the model space vanishes (apparently zooming way the heck & gone) evidently something is set in the drawing to force a zoom extents.

ideas on what I'm doing wrong?

[BlackBox]

Check UCSFOLLOW sysvar (Drawing saved):

https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/View-is-automatically-zoomed-to-extents.html


Cheers

[cadtag]

set to zero, and UCS is world, and always has been.

still dble-clicking into a viewport does a Zoom E automatically. going back to Paper space does not restore the previous viewvpmin

[BlackBox]

Interesting - does this also happen in a new Viewport in same Layout, or in new Layout, by chance (in same drawing)?

If that still suffers the undesired behavior, what about WBLOCK entire drawing?

[cadtag]

This job finally came back -- seems to be some type of corruption in the viewport object -- best fix has been to create a new viewport (save the modelspace view in the old bad biewport, and set it current in the new one, delete the old and drag new over.)

[BlackBox]

Glad you got it sorted. :beer: