It seems like the bug tracker can't handle emoji characters in the message above.
Here's the original description without the camera char:

RenderText: Cursor placement and movement broken for obscured emoji.

What steps will reproduce the problem?
(1) Copy the camera emoji char: (omitted for bug tracker defect)
    http://www.fileformat.info/info/unicode/char/1f4f7/index.htm
(2) Type in a Views password/obscured textfield (eg. Views Examples, http auth dialog)
    https://www.httpwatch.com/httpgallery/authentication/
(2) Paste numerous copies of the character; you'll see asterisk chars '*' instead.
(3) Observe the cursor position; move the cursor back and forth over the chars.

Expected: Cursor moves by one asterisk '*' char at a time; pasting at end keeps cursor at end.
Actual: Cursor moves by multiple asterisk '*' chars at a time; pasting at end moves cursor to mid-string.

Issue 606009 fixed a crash when itemizing obscured emoji chars.
There's some bad index logic elsewhere in RenderText for obscured emoji, etc.
(likely something is using display indices when it should use layout/text indices)

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available. If you change it back, also remove the "Hotlist-Recharge-Cold" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot