syncpulse
There are a number of inconsistencies between the keyboards on PCVR and Quest as used for world InputField/VRCUrlInputField and various places in the VRC menus such as world search boxes. These inconsistencies make it difficult to have the same UX on both platforms.
I have noticed the following, and there may be others too:
  1. Quest ignores trailing whitespace when displaying text in the input box. PC displays the text including trailing whitespace.
  2. Quest does not show a cursor. PC shows a blinking cursor.
  3. Quest doesn't have the concept of a cursor at all really - can't select text. PC can select text and place the cursor freely in the typed text.
Furthermore, a completely different keyboard is used for username/password input during login, than what is used everywhere else in the app. I don't know if there is some specific reason for this (localized keyboard concerns perhaps?) but the username/password keyboard feels bad compared to the other one. It does not support two-handed typing and only enters the pressed key upon releasing the key, rather than on the initial press like the other keyboard.
Noting that these are not new issues, although I believe the behavior of the quest input field when the text overflows the visible area was improved sometime within the last ~year or so