Last modified: 2014-05-02 23:30:06 UTC

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Bug 61937 - Auto scrolling badly breaks when writing "over the edge" (end of page)
Auto scrolling badly breaks when writing "over the edge" (end of page)
Status: NEW
Product: MediaWiki extensions
Classification: Unclassified
Flow (Other open bugs)
unspecified
All All
: Normal major (vote)
: ---
Assigned To: Nobody - You can work on this!
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2014-02-26 01:14 UTC by Eduard Braun
Modified: 2014-05-02 23:30 UTC (History)
5 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description Eduard Braun 2014-02-26 01:14:18 UTC
There seems to be a major bug with auto scrolling that starts when one is writing "over the edge" of the currently visible browser viewport.

Steps to reproduce:
- Visit a permalink of a topic (problem might be exclusive to topics as I can't reproduce it right now on a whole board)
- Click "Reply" or the reply box at the bottom
- Now start entering blank lines (just keep repeatedly pushing the enter key)
- At some point the lower edge of the input field reaches the bottom of the currently visible browser viewport
- Keep entering newlines (or maybe also some text from time to time to be able to better observe the problem)

Expected behaviour:
- Flow should keep the active line (therefore the last line if you followed the steps above) in sight, therefore at the bottom of the page.

Actual behaviour:
- At some point (soon after reaching the original end of the page) the automatic scrolling goes totally crazy.
- It starts with the text jumping around by some pixels every time one is entering a character
- Soon after the whole page is jumping around by multiple lines whenever entering a character
- the active line is only quickly in the visible browser viewport when entering the character; quickly after the viewport is jumping back up the page and the active line is hidden.

The above occurs for me on Windows 7 using Firefox 27.0.1
Comment 1 Quiddity 2014-02-26 18:27:33 UTC
[Confirmed]
Regarding this, and bug 61938 - I believe the "scroll-to" code is currently being overhauled. (Or was recently, and these are fresh bugs). I'll nudge the relevant devs, in case this is part of a work-in-progress.

Also, much thanks for these exemplary detailed and clear bug summaries. They're greatly appreciated. :)
Comment 2 Maryana Pinchuk 2014-02-26 21:39:03 UTC
Not seeing this on Chrome, so it may be FF-specific (since I know Quiddity is also on FF).

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