Fix slow scrolling area repaint

[ivancuric]

Promotes two offending elements to their own layers.

https://twitter.com/_baxuz/status/939065264410382336

[sindresorhus]

This only improves scroll performance when a single-tweet is modal, right?

[sindresorhus]

Can you add something like - Improves the performance of twitter.com to https://github.com/sindresorhus/refined-twitter#highlights and make it link to here?

[ivancuric]

This only improves scroll performance when a single-tweet is modal, right?

Yes and no. The RichEditor-tempTextArea sometimes remains rendered after you close it as a zero-height fixed position element causing repaints even when the modal is closed. I haven't found the cause, it's probably a state/race condition bug on their end.

Can you add something like - Improves the performance of twitter.com to sindresorhus/refined-twitter#highlights and make it link to here?

Will do.

[sindresorhus]

Awesome! Any other performance improvements more than welcome :D