Confirm Navigation dialog on post.php when no changes have been made

[c3mdigital]

To reproduce bug:

Go to any post and click update. Click view post or navigate away from post.php

You will get the confirm navigation javascript alert message.

[TobiasBg]

I can't reproduce this on trunk.
Tried different scenarios, but only got the message when I had made changes without saving, as expected.

[c3mdigital]

Replying to TobiasBg:

I can't reproduce this on trunk.
Tried different scenarios, but only got the message when I had made changes without saving, as expected.

I've been doing some more testing and this is only happening on posts that have an inserted image in visual mode.

[SergeyBiryukov]

Replying to c3mdigital:

this is only happening on posts that have an inserted image in visual mode.

Confirmed.

[TobiasBg]

Ah, yes, for that case I can also confirm it.
Clicking "Update" is not even necessary. Just opening a post/page with an image results in that message when navigating away without doing changes, but only when the "Visual" editor is used.

[nacin]

Can someone confirm this is not the case in 3.4? Also, there were two distinct changes here that could have caused this: either r21545 (TinyMCE 3.5.6) or the more recent media changes.

[SergeyBiryukov]

Introduced in [22012].

[markjaquith]

I did a git bisect, and it says [22120] was the introduction of the bug.

[markjaquith]

Need to be on Visual tab.

• [22012] is where it broke when a single image is embedded.
• [22120] is where it broke when an image gallery is embedded.

[SergeyBiryukov]

Related: #22266 (has an explanation)

[SergeyBiryukov]

Duplicate of #22266.