JSFiddle - React, Tailwind, and code Playground
HTML
<p>Clicking on the actual checkbox twice in a row works just fine</p>
<label>
<input type="checkbox" />
<span>Clicking on the checkbox's label twice in a row feel wrong.</span>
</label>
CSS
label span {
background: yellow;
-webkit-user-select: none; /* webkit (safari, chrome) browsers */
-moz-user-select: none; /* mozilla browsers */
-khtml-user-select: none; /* webkit (konqueror) browsers */
-ms-user-select: none; /* IE10+ */
}