[IE] Unwanted scroll on first mouse right-click

[Garry Yao]

Environment

All IE versions

Reproducing Procedures

1. Open our online demo page;
2. Scroll down the document to bottom without puting focus into the editing document;
3. Mouse right-click (contextmenu) at the last paragraph;
   • Actual Result: The document is scrolling to top and the context menu is opened at the new position.
   • Expected Result: Context menu opens at the clicked location with no document scrolling occurs.

[Garry Yao]

It's pretty much a browser bug here of IE's behavior on right mouse click:

1. Mousedown: Focus the document first if window doesn't gain focus yet;
2. Mouseup: Make a collapsed selection at the mouse position in document;

There's an obviously problem with this is that the first step may cause document scroll and thus the at the second step the document position indicated by the mouse is already changed.

Comparing with other browsers, e.g. Firefox, is actually making the selection at the first step.

[Garry Yao]

Manual Ticket Test added:
​run OR ​view source.

[Sa'ar Zac Elias]

Updated patch

[Tobiasz Cudnik]

Fixed with [5876].

[Tobiasz Cudnik]

Correction: Fixed with [5877] not [5876].