I tried to exclude uikit.css from template, and then the dropdown list was opened and closed right away on mobile.
I found cause and comment it. See the code.
.uk-light .uk-logo > :not(.uk-logo-inverse):not(:only-of-type),
.uk-section-primary:not(.uk-preserve-color) .uk-logo > :not(.uk-logo-inverse):not(:only-of-type),
.uk-section-secondary:not(.uk-preserve-color) .uk-logo > :not(.uk-logo-inverse):not(:only-of-type),
.uk-tile-primary:not(.uk-preserve-color) .uk-logo > :not(.uk-logo-inverse):not(:only-of-type),
.uk-tile-secondary:not(.uk-preserve-color) .uk-logo > :not(.uk-logo-inverse):not(:only-of-type),
.uk-card-primary.uk-card-body .uk-logo > :not(.uk-logo-inverse):not(:only-of-type),
.uk-card-primary > :not([class*='uk-card-media']) .uk-logo > :not(.uk-logo-inverse):not(:only-of-type),
.uk-card-secondary.uk-card-body .uk-logo > :not(.uk-logo-inverse):not(:only-of-type),
.uk-card-secondary > :not([class*='uk-card-media']) .uk-logo > :not(.uk-logo-inverse):not(:only-of-type),
.uk-overlay-primary .uk-logo > :not(.uk-logo-inverse):not(:only-of-type),
.uk-offcanvas-bar .uk-logo > :not(.uk-logo-inverse):not(:only-of-type) {
display: none;
}
After excluding uikit.js from template, the dropdown list work correctly on all devices. In this file I can't found cause of this problem.
Can I rename class "dropdown" (like "dropdown-chrono), which inserted automaticaly by the your component?