Thunderbird and disappearing cursor

[ToddAndMargo]

On 07/20/2018 07:18 PM, Ralf Mardorf wrote:
> On Fri, 20 Jul 2018 19:02:41 -0700, ToddAndMargo wrote:
>> I was told that controlling the cursor was an Xfce function and not
>> Thunderbird by the Thunderbird group.
> 
> Hard to believe that something that is known to happen, usually caused
> by Thunderbird add-ons or a theme, wasn't mentioned. I'm not using
> Thunderbird and just skimmed through hints from Mozilla support for a
> few seconds.

My guess is that it is Thunderbird.  This has happened for a few
months now, so it was probably an update that did it.