[wp-trac] [WordPress Trac] #29338: Awkward jump when clicking text tab after scrolling visual editor

[WordPress Trac]

#29338: Awkward jump when clicking text tab after scrolling visual editor
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 Reporter:  gcorne        |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Editor        |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  ui
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Comment (by stephdau):

 1. Switching from the visual editor to the text editor triggers
 `textEditorResize()`.
 1. The text editor is never as tall as the visual one, with the same
 content, since same but unstyled.
 1. We resize the editor to be the height of the non-WYSIWYG text content
 (see editor status bar moving up.
 1. But we don't (or fail to) recalculate where the top/bottom of the
 pinned sidebar should be in relation to the current editor's size (I
 think).

 EG: switching `hiddenHeight ` for `textEditorHeight ` at
 https://core.trac.wordpress.org/browser/trunk/src/wp-admin/js/editor-
 expand.js?rev=29656#L144 stops the Awkward jump from happening, but the
 text editor ends with a slew of whitespace at its bottom that the user
 cannot access (totally a height equal to the discrepancy between the
 visual and text editors heights). So not quite a solution.

 Another hack to "make the problem go away) is to force a scrollTop(0) when
 switching to the text editor (aka, in `mceHide()`), which recalculates the
 editor and sidebar positions, and make the issue moot. Still not great.

 Still currently at a loss for an actual fix. :)

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Ticket URL: <https://core.trac.wordpress.org/ticket/29338#comment:4>
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