Inventor 2022.3: Deleting a reference dimension in a sketch breaks the sketch = "problems encountered while executing this command"

[jeffg28CLY]

I'm working up some quick-fire, messily-made 3d prints of some profile variations to try out.

I added a reference dimension, I think it was by an accidental misclick, so I went to delete it.

...That broke the sketch:

If I try deleting the .260 reference dimension near the bottom-center there, nearly every dimension on the sketch turns pink to show they're broken, and Inventor says "Delete Selections: problems encountered while executing this command."

I guess something got corrupted somehow? How does deleting a newly-created reference dimension break a sketch?

Part file is attached.

Open up Sketch 1, and delete (.260). You should immediately get the error message.

[Alexander_Chernikov]

The problem may be that the sketch is not fully constrained (it needs 2 constrains).
If you add the shown angular dimension, then you can delete the dimension (.260) without error.
But there is one more unspecified parameter.

The corrected file is attached.

[jeffg28CLY]

I hadn't gotten that far into the design as to fully constrain the sketch.

But whether a sketch is or isn't fully constrained, I would think that a reference dimension should have absolutely zero effect on the stability of the sketch or model, especially when it's not used by any formulas. I would expect a reference dimension to function entirely like a neutral observer.

[Tom_Sturtevant · Accepted solution]

Hi Jeff –

Yes, a reference dimension should be a “neutral observer”. This is definitely a bug and is now tracked as INVGEN-64940.
Thanks for taking the time to report the issue!

T.0.M.