Hi,

Thank you for your question. It sounds like you may be seeing the result of a known issue in respect of X-Mouse Button Control software on your computer.

This is something that we are aware of and have communicated to the developer of X-Mouse Button Control. They are currently testing a solution to this and we hope they can make it more widely available soon.

For more information, please see the X-Mouse Button Control in Firefox 110 support article.

An updated version of X-Mouse Button Control (XMBC 2.20) has been released. Issues with Firefox 110 should be fixed. To learn more, see https://forums.highrez.co.uk/viewtopic.php?t=4682