Consider the following HTML snippet
<table> <tr><td style='background:black'></td></tr></table>

After the wysiwyg filter runs on it it becomes.
<table> <tr><td></td></tr></table>

I have tracked it down to the regular expression for checking the background style

Comments

StatusFileSize
new1.18 KB

Patch for the same.

StatusFileSize
new1.21 KB

Patch for the D7 version of the module.