All WCAG criteria
WCAG 2.1·Perceivable·1.4 Distinguishable
1.4.13 Content on Hover or Focus
Level AATooltips and popovers must be dismissible (Esc), hoverable (cursor can move into them), and persistent (stay until dismissed).
Why it matters
Tooltips that disappear when you hover them cannot be read by users using zoom.
How OnlyEnable handles this
Source-code fix required. No widget can solve this — it requires changes to your content or markup. Our remediation team can help.