id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
11126	Various issues when undoing when at the bottom of snapshots stack	Olek Nowodziński		"Surprisingly, for some reason, when multiple inline editor are in use (/samples/inlineall.html), they share (actually: abuse) one another's undo stack. It happens when CTRL+Z is pressed and there are no snapshots left on the current stack.

It doesn't look like a feature, really, and since the issue can be reproduced since 4.0 in different browsers, it's time we fixed it.

See attached video (recorded in FF) to know more.

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Another TC. On IE open the inline all sample, focus one of the editors with more complex contents, type something and press CTRL+Z multiple times. Textfified version of the initial contents will be loaded.

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=== The reason ===

It seems that editor does not prevent the native undo if it reached the bottom of snapshots stack. It allows browser to do stuff and weird things happen."	Bug	confirmed	Normal	CKEditor 4.3.1	Core : Undo & Redo	4.0