the control link to the cube, flashes and jumps when show,why?
// cube click code
var rect1 = new Rectangle();
rect1.width = 0.2;
rect1.height = "40px";
rect1.cornerRadius = 20;
rect1.color = "Orange";
rect1.thickness = 4;
rect1.background = "green";
advancedTexture .addControl(rect1);
var label = new TextBlock();
label.text = "Sphere";
rect1.addControl(label);
rect1.linkWithMesh(cube);
rect1.linkOffsetY = -50;
Hey! do you mind sharing a repro in a PG?
âPGâ here means Playground. To create a repro, go to playground.babylonjs.com, recreate the bug inside the playground, then hit the save button and share the link with us 
PS: Welcome to the Babylon community!
Hey there, I was really curious why this code wouldnât work and I went ahead and made a quick playground that runs your code when the box mesh is clicked and it seems to be working. You can see below that I used an ActionManager to respond to clicks on the mesh. 
https://playground.babylonjs.com/#6HUMYI
EDIT: I tried this playground repo out on version 4.2 and it does produce the flickering behavior, so I suppose itâs been fixed already. I recommend to try using the latest preview build and see if it fixes the issue for you.
Yes this was a bug in 4.2 which was fixed in this PR:
Like Blake has suggested, make sure you are on the latest version 5.0 preview. If there are still issues of this please let me know with a repro and I will definitely take a look!
I change to the latest version 5.0 preview , the issue does not existďźthank you!
thank you!
