1326622 - Lines in long styles/scripts appear with noticeable delay when I change height of codemirror instance

Status: RESOLVED WORKSFORME

(DevTools :: Source Editor, defect)

Description

[arni2033]

>>>
STR_1:
1. Open https://www.mozilla.org/en-US/firefox/nightly/firstrun/
2. Open style editor or debugger, find stylesheet/script long enough (prettify script in debugger)
3. Enable split console (Escape key)
4. Disable split console (Escape key)

AR:  Step 4 - several lines at the bottom of codemirror instance are missing. They appear after 0.3s
ER:  Step 4 - all code in condemirror instances should be visible immediately


STR_2:  (difference in steps 3,4)
1. Open https://www.mozilla.org/en-US/firefox/nightly/firstrun/
2. Open style editor or debugger, find stylesheet/script long enough (prettify script in debugger)
3. Dock devtools to right side of the window OR open it in separate window (Ctrl+Shift+D)
4. Dock devtools to bottom side of the window (Ctrl+Shift+D)


STR_3:  (difference in steps 3,4)
1. Open https://www.mozilla.org/en-US/firefox/nightly/firstrun/
2. Open style editor or debugger, find stylesheet/script long enough (prettify script in debugger)
3. Resize devtools by quickly dragging horizontal splitter to the top


Note:
 The most annoyance is STR_1. I don't do STR_2 or STR_3 quite often, and usually
 everything is blinking, therefore bug is not so noticeable.