Upcoming events in Calendar unable to choose calendar

[Match Fishing]

I have multiple calendars splitting events nationwide different events are shown on different pages, 

however today I noticed  when i dragged a new upcoming events into a new page from the block manager I can no longer select the calendar I wish to show the events from

whatever I try I cannot scroll through the calendars to choose the correct calendar,  can anyone throw any light on this  as its worked fine previously  i recently applied the upgrade  but cannot recall how long ago it was since i last dropped in this feature so cannot say if this is connected.

I have added a screenshot below  the edit block  is clearly present  but the scroll does not allow the edit  even the scroll on the calendar list itself  only gives me access to 2 of the calendars from about 12  it just seems like its bogged me out.

Paul

 

 

 

[Match Fishing]

Anyone got any idea why this function is Jailed and I cannot edit?