Scrolling the page down on a calendar causes it to jump back to the top

Any error / warning message in the Drupal log or your browser console?
What version of your Drupal core?
What version of this module that came across this issue?

Hi,

This happens with Drupal 9.x. There have been several Drupal version updates since this issue was created 8 months ago so it doesn't seem to be related to the Drupal verion.

This started with FullCalendar View 5.1.7. - 5.1.6 does not have this issue. There are no errors in the Drupal log, the server log, or in the browser console that I can see. I'm gonig to poke around some more and see what I can come up with.

Hi,

I did some testing with it this morning and wasn't able to come up with anything useful other than that I switched to the default theme and it still had the scroll-up issue in any version beyond 5.1.6. I'm happy to do any testing if you have some thoughts on why this is happening.

Thanks,

-=Delty

When you said 'default theme', do you mean 'Olivero 9.5.7' theme from Drupal 9.5?

Is there a scrolling button shipping with Olivero theme? If not, how could that happen?

Till 2nd April, there are near 10k sites installing 5.1.6 and above, and no others came across this issue.

So I think you need to have a close look at your custom theme.

I've narrowed the issue down to a single line in fullcalendar_view.js...

// Trigger Drupal behaviors when calendar events are updated.
calendarOptions.datesRender = datesRender;

I've commented this out and everything seems to work just fine without it. Is it even needed?

Thanks,
-=Delty

https://www.drupal.org/project/fullcalendar_view/issues/3214419#comment-... →