fernanek,

I was not able to reproduce your problem with a fresh install of MantisBT release 1.2.19 and a fresh install of Firefox.

Please provide detailed step-by-step instructions to reproduce the issue; the following additional information may also be useful:

• Exact version of MantisBT, PHP, Database, Web server, Browser and Operating System
• Relevant customizations (e.g. changes in config_inc.php, etc)
• Installed plugins or custom functions ?
• Was the MantisBT source code modified in any way ?
• Installed Firefox add ons ?

I see where the problem is, I have downloaded and installed a custom CSS, called colourized from https://github.com/bueltge/MantisBT-Colorized

This is the problem, when I apply this css to my mantis, is when the problem arises.

Anyway here is the informstion you ask.

• Mantis BT 1.2.19 scheme 183, php 5.3.3, apache httpd 2.2.15, centOS 6.6 x64
• No customizations in config_ini.php except CSS
• No plugins, no custom functions
• Nothing modified in source code
• No firefox addins
• Firefox 38.0.1 client browser

Since the issue is caused by the custom CSS, I am resolving this as no change required. I suggest you open an issue at https://github.com/bueltge/MantisBT-Colorized/issues, maybe the theme's author can look into it and fix the problem.

I will also remove the attachment, it does not add any value (code can be downloaded from github)