Can't place or move tabs on machine path where I could before.

[wh6Q9NU]

My file shows the tabs I placed before, but now I can't select move/place tabs anymore on some parts of my machine path. What could have happend?

Is it a known issue?

Is there a workaround?

Now I'm stuck with my setup.

Thanks for any help!

see attached animated gif where to line at the corner is not responding anymore on mouse pointer move over

[wh6Q9NU]

With lines and regular circles placing tabs seem fine.

But placing/moving a tab along a bezier curve seems broken.

[seth.madore]

Can you share your file?

File > Export > Save to local folder. Return to thread and attach the .f3d file in your reply

[wh6Q9NU]

file attached, please check in manufacture the machine path named "2D Contour front".

[wh6Q9NU]

Workaround: 
Create a sketch, add points and in manufacture click these points to add tabs.