Atoms and Buckets seem to shake while manipulating molecules in the play area

[loganbraywork]

Test device

Windows 10 laptop

Operating System

Windows 10 v. 1903

Browser

Edge v.83.0.478.56

Problem description

For https://github.com/phetsims/QA/issues/509

Appears on Chrome as well. Does NOT appear in Firefox. Atoms in the buckets in the Playground screen seem to jump or shake when molecules or atoms are manipulated in the play area. I've noticed that this seems to occur when the atoms are moved while in the upper half of the play area, as opposed to the lower half.

Steps to reproduce

1. Enter the Playground screen
2. Using the arrows next to the buckets, switch to the 5th set of buckets (featuring only 1 phosphorus)
3. Remove the phosphorus from the bucket and drag it around the upper half of the play area

Visuals

Troubleshooting information: !!!!! DO NOT EDIT !!!!! Name: ‪Build a Molecule‬ URL: https://phet-dev.colorado.edu/html/build-a-molecule/1.0.0-rc.1/phet/build-a-molecule_all_phet.html Version: 1.0.0-rc.1 2020-06-19 20:40:00 UTC Features missing: touch Flags: pixelRatioScaling User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36 Edg/83.0.478.56 Language: en-US Window: 1313x647 Pixel Ratio: 1.4625000953674316/1 WebGL: WebGL 1.0 (OpenGL ES 2.0 Chromium) GLSL: WebGL GLSL ES 1.0 (OpenGL ES GLSL ES 1.0 Chromium) Vendor: WebKit (WebKit WebGL) Vertex: attribs: 16 varying: 30 uniform: 4095 Texture: size: 16384 imageUnits: 16 (vertex: 16, combined: 32) Max viewport: 32767x32767 OES_texture_float: true Dependencies JSON: {}

[Denz1994]

An initial investigation doesn't indicate that atom positions, destinations, or atomNode translations aren't being updated while in the buckets. Also, this isn't just related to the buckets or atoms because the carousel, page navigation, and resetAllButton is also shaking in the gif. The next steps would be to check for changing Bounds (carousel, layout bounds, and play area).

As a side note, I can't replicate this buggy behavior on my local machine (windows or mac).

[Denz1994]

I've exhausted checking for bounds or position changes of all view components on the playground screen while dragging items as described above. These values aren't changing and I can't replicate this behavior locally. I've also tried replicating on two mobile devices, two windows devices, and my primary dev machine (MacBook) with no success. If this was a performance issue it should be evident on a mobile device.

Passing this back to QA to make sure this can still be replicated. Perhaps there is a different set of instructions to follow to reproduce this bug. I find it odd that this wasn't caught in https://github.com/phetsims/QA/issues/506 being that this dev-test came right before this RC with little code changes in between.

@KatieWoe Can this be tested again to verify this can be replicated with the above steps? I'm having trouble reproducing this bug.

[loganbraywork]

The laptop I used for testing in which I found this issue has a large screen. This may be the cause of the shaking. I did test this issue when the window is not fully expanded, and the same shaking does occur.

[KatieWoe]

I looked on master on Win 10 Chrome and didn't see anything. But also can't really see it in the gif. As such I'm going to assign @loganbraywork to work with @Denz1994 on this.

[Denz1994]

Should be verified by the latest RC.

[ariel-phet]

I checked this on Win 10 edge, not seeing anything. Could be device specific, since neither myself, @Denz1994 @KatieWoe has seen this, it is not worth pursuing further. Closing