impress / impress/impress.js

User can Scroll in Windows leading to bad render

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Dominant language
JavaScript
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Description

The middle mouse button scroll in Windows causes glitches in render. I have attached screenshots below from one of my presentations.

Moreover, I can scroll indefinitely in either axes using the same middle mouse scroll when the rotate transforms are used (only in Firefox).
Wheel scroll also causes slides to rearrange on the display.
This issue is not reproduced in Linux using Firefox.

Normal view (Chrome 38 on Windows):
![capture1](https://cloud.githubusercontent.com/assets/7024200/4923607/0904847a-651c-11e4-93dc-3bbd9a51125e.JPG)

After scrolling using wheel (Chrome 38 on Windows):
![capture2](https://cloud.githubusercontent.com/assets/7024200/4923633/4cd22630-651c-11e4-938e-6fdc7889db74.JPG)

Firefox keeps the backgrounds intact, though.

Contributor guide

No contributing guide indexed for this repository

Research direction

No files or tests are identified. Start by reproducing middle-mouse and wheel scrolling with rotate transforms in Firefox and Chrome on Windows, then compare with Firefox on Linux; done means scrolling no longer glitches the render, allows unbounded movement, or rearranges slides.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
frontend, web-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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