Blink with useTransition

[gregberge]

Bug

What is the current behavior?

As discussed with @gaearon in this thread: https://twitter.com/dan_abramov/status/1189923059031068672

When the useTransition is fast, it results to a small blink for the user. You can reproduce it in this example :

• Choose "Concurrent Mode"
• Click "Next" in "fretch-mode: legacy-mode"

https://codesandbox.io/s/fretch-example-r6t8g

A simpler example can be provided but I don't have time right now, I just want to track the issue.

What is the expected behavior?

The expected behaviour would be to avoid the blink if it is less than "100ms" (or another arbitrary delay).

Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?

The experimental version, see the example.

[gaearon]

This sandbox has a lot of code. Any chance you could isolate that to a minimal example?

[gregberge]

This sandbox has a lot of code. Any chance you could isolate that to a minimal example?

Hello, since I don't work on it any more, no chance sorry!

[gaearon]

This is likely same as #18006 (comment).