Dropdown Tree not working on Firefox, ej2 version is 30.1.37

Question

HiThe dropdown tree currently errors in when using 
Firefox v139 in Ubuntu. Example can be tried using the official demo 
link. Although, it works fine in Chrome.https://ej2.syncfusion.com/demos/#/bootstrap5/drop-down-tree/default.html The error is "Uncaught ReferenceError: TouchEvent is not defined"Regards,Azfar

LeoLavanya Dhanaraj · Accepted Answer

Hi
Mike,Thanks
for your patience.We
are glad to announce that our patch release 30.1.42 has been rolled
out successfully. The issue where “Dropdown Tree fails to open in Firefox” has been resolved in that release itself.To
access this fix, we suggest you update the package to the latest
version 30.1.42 and we include the workable sample for your reference.Sample
:  https://stackblitz.com/edit/kznov24n-mxd3fr4m?file=index.htmlRoot Cause:  Firefox's implementation of touch events differs from other
browsers, causing the condition !(e instanceof TouchEvent) to evaluate
incorrectly, preventing the dropdown from opening.

Saravanan Jayavel · Answer

Hi
Azfar,With the
shared details, we have validated and considered the reported scenario of “Dropdown
Tree fails to open in Firefox” as bug on our end. The fix for this
issue will be included in the weekly patch release which is scheduled
for July 15, 2025.You can
track the status of the fix through the following link.Dropdown Tree fails to open
in Firefox in JavaScript | Feedback PortalDisclaimer: Inclusion of
this solution in the weekly release may change due to other factors including
but not limited to QA checks and works reprioritization.Regards,Saravanan
J

Mike Stankovich · Answer

Has this been fixed?

LeoLavanya Dhanaraj · Answer

Hi Mike,We were unable to include the fix for the issue(“Dropdown
Tree fails to open in Firefox”) as promised in the weekly patch release
scheduled to be published on 07/15/2025. Currently, we are working on the fix
with high priority, and it will be included in the next weekly release
(07/22/2025) without any further delay.We apologize for any inconvenience this may have caused and
appreciate your understanding.Regards,Leo Lavanya Dhanaraj

Mike Stankovich · Answer

Sounds good.  Thank you for marking this as high priority as this is a major issue for anyone using this control

Mike Stankovich · Answer

This still doesn't appear to be fixed.  This is now 2 releases this has been missed.  This is extremely high priority as anyone that uses Firefox and doesn't have a touchscreen cannot use this control

Saravanan Jayavel · Answer

Hi Mike Stankovich,We regret to inform you that
the fix for the issue titled "Dropdown Tree fails to open in
Firefox" was not included in the weekly pack release scheduled
for July 22, 2025, as planned. However, the fix has been internally included
and is scheduled to roll out in the upcoming patch release on July 29, 2025.If you would like to verify the
fix before the official patch release, we can provide a custom patch.
Please let us know if you're interested, and we will arrange it according to
your fix's expected version.We sincerely apologize for any
inconvenience caused and greatly appreciate your continued patience and
understanding.Regards,Saravanan J

Mike Stankovich · Answer

We had to roll back versions at this point so we could ship so we'll just wait at this point.  We are completely understanding that things change, but please don't promise things.  Our testing was on hold due to waiting for the promised fix.

Azfar · Answer

Yes everything seems fine now on Firefox.Thanks a lot

LeoLavanya Dhanaraj · Answer

Hi Azfar,Thanks
for the update and we glad to know that your issue has been resolved. Please
get back to us if you need any further assistance in future.