Here's my favorite UI/UX bug which has been there for years:
In Calendar (macOS) create a new event.
In the start or end time, type in the Minutes field, but type slowly.
For example, type "2" pause a bit, then type "1"
If there's more than ~300msec pause between the two keypresses, the 2 changes into "02" and then the 1 overrides it, so you end up with "01" instead of 21.
Works with any two kepresses. Same problem in the date fields.
Completely wrong, and super bad for accessibility.
In Calendar (macOS) create a new event.
In the start or end time, type in the Minutes field, but type slowly.
For example, type "2" pause a bit, then type "1"
If there's more than ~300msec pause between the two keypresses, the 2 changes into "02" and then the 1 overrides it, so you end up with "01" instead of 21.
Works with any two kepresses. Same problem in the date fields.
Completely wrong, and super bad for accessibility.