Your custom CSS did the trick – looks like it was a theme styling issue.
input, textarea {
-webkit-touch-callout: auto !important;
-webkit-user-select: auto !important;
-khtml-user-select: auto !important;
-moz-user-select: auto !important;
-ms-user-select: auto !important;
user-select: auto !important;
}
Thanks so much!