Changing sketch dimension may result in a shadow profile

[Anonymous]

I think this might be a bug. I have an M2.5 panhead machine screw (attached). I can edit the sketch and change the 5mm
outer diameter to, say, 4mm and that works ok. Edits like that are usually fine - I think I ran into issues because I was creating M3,M4 etc screws from an original design and I was hopping around checking dimensions.

I can get Fusion 360 into a state where the sketch will show a ghost of the previous diameter. For example there are three extrusions in the design I attached:

- Right click the centre one and edit feature. Cancel. Sometimes now the first item in the timeline, the sketch is highlighted. Now I can't right click on it. Not sure this is a big deal. This action seems to matter though when getting a shadow to appear...

- Then I edit the sketch (in the browser) and change 5mm to 4mm. Now I get this:

There's a shadow profile around the outside. That profile isn't based on anything other than something that used to be there and now isn't! But I can now stop the sketch. And if I click on the sketch in the timeline I can see that the ghost is still there. I can even extrude from it too, mostly accidentally!

[James.Youmatz]

Hi @Anonymous,

Thanks for sharing this - I get the same results as you as well! To be honest, not too sure why this is happening, all I know is that it shouldn't be. I've gone ahead and logged this with development (FUS-37569). I'd be curious to see what might be going on. I'll keep experimenting as well to see if we can't get that ghost profile to disappear.

Thanks,

[Xierion]

I've had the same thing in a few of my models and previously the sketches weren't overly complicated so I have redrawn them from scratch. My latest instance was on a more complicated sketch so as a test I saved the design as a new file, closed, and re-opened and the ghost profile was no longer there.