Bug 1602151 Comment 0 Edit History

Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.

### Basic information

Steps to Reproduce:
1. Open https://perfht.ml/34WIgM9
2. Quickly scroll down
3. Scroll up again

Expected Results: Smooth scrolling

Actual Results: Extreme checkerboarding.

Both for WebRender and non-WebRender

---

### More information

Screenshot: https://www.loom.com/share/26261d23e663460eb678a94f23f09ac5

Profile URL:
WebRender on: https://perfht.ml/34WIgM9
WebRender off in my default profile: https://perfht.ml/2DVB6vM

#### Basic systems configuration:

OS version: 10.15.1 (19B88)
### Basic information

Steps to Reproduce:
1. Open https://www.rivalry.com/
2. Quickly scroll down
3. Scroll up again

Expected Results: Smooth scrolling

Actual Results: Extreme checkerboarding.

Both for WebRender and non-WebRender

---

### More information

Screenshot: https://www.loom.com/share/26261d23e663460eb678a94f23f09ac5

Profile URL:
WebRender on: https://perfht.ml/34WIgM9
WebRender off in my default profile: https://perfht.ml/2DVB6vM

#### Basic systems configuration:

OS version: 10.15.1 (19B88)

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