Viewport jumps to random position

#1

Hi Elco

I have a strange issue, and it’s not consistent.

Most of the time when I’m placing lattice support contact points on the model, things go just fine. However sometimes, it will not place the contact ball, and the viewport will jump to some random position, sometimes so far away that the build plate is no longer visible in the viewport. I can not find any consistent condition for it (i.e. surface angle or whatever), apart from when it happens at a certain point, it always happens at that same point.

#2

@formware Here’s a screengrab showing it happening.

Recording 2025-10-26 234331.zip (8.9 MB)

#3

@formware, I’ve gone back to 1.2.6.1 and can confirm that it doesn’t exhibit this behaviour, so it’s confined to 1.2.7.3

Update: And… I’m forced to go back to 1.2.7.3 as 1.2.6.1 won’t open any fw3d files created in 1.2.7.3. This is a big problem for me.

#4

@formware anything? It’s unusual not to have a reply

#5

Hi Frank,

Sorry for the delayed reply; it’s been incredibly busy. I’ll try and be a bit more responsive.
Do i get correctly from your video it’s switching compeltely for ‘right’ view as soon as you click the bottom of the model?

Elco

#6

Hi Elco @formware

In that particular example, as soon as I try to place a support it snapped to a right view without actually placing the support. Other times when it’s happened, it’s snapped to some other view.

#7

Hi Frank,

I cant reproduce it on a clean V1273 install.

  • Are you able to email me your configuration xml so I can test that?
  • And are you sure you are not fireing some command?
  • It seems you are in isometric viewmode; does it als happen in perspective?
  • Do you use a 3d mouse?

kind regards
Elco