Sample issue report: A call to Window.alert() or Window.confirm() will cause the client side to hang in Firefox but not in Chrome or IE.

Found in GWT Release (e.g. 2.4.0, 2.5.1, trunk): 2.7.0

Encountered on OS / Browser (e.g. WinXP, IE9, FF10): FF 38.0.5

Detailed description (please be as specific as possible): A call to Window.alert() or Window.confirm() will cause the client side to hang in Firefox but not in Chrome or IE. The alert box and message appear. You can click the acknowledge button and the box will disappear but no other form controls are usable after that, as if you remain in MODAL-DIALOG mode.

Shortest code snippet which demonstrates issue (please indicate where actual result differs from expected result):

Window.alert("Hello");

Workaround if you have one:

Develop a custom form to display window alert messages.

Links to relevant GWT Developer Forum posts:

Link to patch posted at http://gwt-review.googlesource.com

The debugger shows it is throwing a makeAssertionError with the message "Negative entryDepth value at entry " + entryDepth

We've moved the issue tracker over to GitHub (see links in http://www.gwtproject.org/lifeofanissue.html) Would you mind re-filing your issue there?

DONE in github