882792 - Sometimes scrolling doesn't work

Status: RESOLVED FIXED

(DevTools :: Source Editor, defect)

Description

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

Sometimes I won't be able to scroll in the source editor. Has happened to me in the style editor and the debugger. I've tried making sure it has focus, still no go. I end up having to use the arrow keys.

Sorry I'm not sure exactly what the STR are, I just know it happens to me fairly frequently.

Comment 1

[Paul Rouget [:paul]]

Was it after you undocked/docked the toolbox?

Comment 2

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

Nope, I always have it docked.

Comment 3

[(not reading bugmail) Nick Desaulniers [:\n]]

Yeah scrolling in the debugger in Nightly 25 in OSX is a dog.

STR:

1. CMD+alt+S
2. Click on a source that you have to scroll to see
3. Without clicking anywhere else, hover over the source with the cursor and try to scroll using OSX gestures (two finger scrolling)

Expected:
Smooth responsive scrolling

Actual:
Sometimes scrolling stops mid gesture
Sometimes scrolling doesn't respond to the gesture (doesn't start)

Comment 4

[Paul Rouget [:paul]]

My guess is it started when we introduced OSX new scrollbars (bug 636564).

Apparently, it only happens in the Source Editor (and on OSX).

Comment 5

[Jonathan Jacobs]

What I've noticed is that if you're scrolling by a very small amount (perhaps a pixel or two, perhaps smaller than a single line?) then no scrolling occurs at all. If your scroll event's amount is larger than some threshold (perhaps bigger than at least a single line?) then some scrolling occurs; although exactly how much scrolling occurs is difficult to gauge by eyeballing it.

Comment 7

[Anton Kovalyov (:anton)]

This had been fixed by the CodeMirror switch.