In 1.4, Voxel introduced the half screen popup appearing from the bottom, some users don’t like this so this code makes it full screen again for all popups. If you want this only for navigation, then use the second code under the Nav widget > Advanced > Custom CSS (Needs Elementor Pro)
@media screen and (max-width: 1024px) {
.ts-field-popup-container .ts-field-popup{--vx-popup-height: 100dvh !important;}
}
For Nav Item Only
Under the Nav widget > Advanced > Custom CSS (Needs Elementor Pro)
@media screen and (max-width: 1024px) {
selector.ts-field-popup-container .ts-field-popup{--vx-popup-height: 100dvh !important;}
}