[Tickets #14267] Forward / Reply / New message results in popup "Loading..."

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Ticket URL: https://bugs.horde.org/ticket/14267
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  Ticket             | 14267
  Created By         | horde-support at inetspec.com
  Summary            | Forward / Reply / New message results in popup
                     | "Loading..."
  Queue              | IMP
  Version            | 6.2.12
  Type               | Bug
  State              | Unconfirmed
  Priority           | 3. High
  Milestone          |
  Patch              |
  Owners             |
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horde-support at inetspec.com (2016-02-24 15:23) wrote:

Any attempt to Forward, Reply, or create a New Message using IE11 (or  
Edge) results in the popup window hanging with the "Loading..."  
message indefinitely.

Server Environment:
CentOS 6 - Apache - MySQL - PHP 5.3.3
Horde Groupware Webmail Edition 5.2.12 (installed via PEAR)
Mail (imp) 6.2.12

Browser: IE11 (also Edge), have not tested on IE8 - IE10

Note: Does NOT occur on Firefox or Chrome and is not limited to any  
single computer installation.  We have tested on Windows 8.1 Pro,  
Windows 7, and Windows 10 machines.

Using the Debugger in IE shows multiple errors occuring through the  
prototype.js file.  The last one being fatal and stopping the script.   
I will list the errors in the order that they occur:

Line 2092 InvalidCharacter
Line 5032 SyntaxError
Line 5045 SyntaxError
Line 969 Unable to get property 'observe' of undefined or null reference

The Call Stack at the point of the final error looks like this:

Unable to get property 'observe' of undefined or null reference

[Main Thread]
Anonymous function [Line: 969, Col: 7], prototype.js
Anonymous function [Line: 1270, Col: 9], prototype.js
invoke [Line: 968, Col: 5], prototype.js
DimpCompose.onDomLoad [Line: 1411, Col: 13], compose-dimp.js
Anonymous function [Line: 7206, Col: 7], prototype.js
fireEvent_DOM [Line: 7066, Col: 5], prototype.js
fire [Line: 7055, Col: 5], prototype.js
_methodized [Line: 456, Col: 7], prototype.js
fireContentLoadedEvent [Line: 7241, Col: 5], prototype.js
[Async Call]
Anonymous function [Line: 7269, Col: 5], prototype.js
Global code [Line: 7231, Col: 2], prototype.js

We understand that Firefox / FireBug are preferred for this type of  
troubleshooting.  However, these errors simply do not surface when  
using either Firefox or Chrome.

We have attached a screen snippet and will be happy to provide any  
further information we can in order to track down this problem.

Thanks,

Jon



horde-support at inetspec.com (2016-02-24 15:23) uploaded:  
969-UnableToGetProperty-FATAL.PNG

https://bugs.horde.org/h/services/download/?app=whups&actionID=download_file&file=969-UnableToGetProperty-FATAL.PNG&ticket=14267&fn=%2F969-UnableToGetProperty-FATAL.PNG