* What you were doing when the issue happened
Toggled Alfred.
* Whether you were able to replicate it a second time by performing the same action
No, it happens occasionally, about 1~3 times per day.
* Include any screenshots that might help us
Sorry, there was no helpful screenshots.
It appeared just as usual, but without cursor, and didn't respond while I was typing.
And the cpu (≤ 3.5%) and memory (≤ 40MB) usage seemed to be quit normal.
* Include the Alfred version & build number you are using
Alfred 4.0.7
Build 1131, Tuesday 17th December 2019
* Include your OS X version
10.15.2 (19C57)