Have you seen this thing: https://cdn.discordapp.com/attachments/279306243519021057/562679306216800287/20190402_124635.png It's driving me mad, how to I remove it? it shows up when keyboard is open and typing and I rotate. I accidentally hit it all the time and get lock in the wrong rotation mode. Using new S9+, issue isn't keyboard (gboard) related as I uninstalled this. Turning on auto rotate removes the popup so i assume it's a system app.
It's not a system app, it's a system feature in Android 9: as an alternative to auto rotation you get a rotate button on the nav bar for a short while after rotating the phone. I've been using it for almost 10 months now and love it, since I've never found auto rotate to work right for me on any device. However, it sounds like there's something funny on your phone: it shouldn't be sitting on top of the carriage return key. I've never seen that, and as noted I've been using Android 9 since last Summer. It might be that Samsung decided that even with the nav bar hidden you would want this button to appear, unlike its behaviour on other devices where if the nav bar is hidden the button is hidden too (I don't see the nav bar in your screenshot so assume you have it hidden). It might be a bug in their ROM. Or it might be that there's something odd about your setup, or a glitch following the update. If other S9 owners on Android 9 respond we'll know whether it's a glitch in your phone or a general feature of the S9's Android 9 ROM. As a workaround you could try a navigation bar customisation app such as Custom Nav Bar and see whether you can remove it that way. Or maybe toggle some of the nav bar settings like the auto hide feature, just in case something's got confused, or try clearing the system cache from recovery (if the S9 still has that option - it's tending to be removed in recent phones). But those are just semi-random "try it in case" guesses. If it's a feature of the S9 and third party solutions don't fix it (or cause other problems) then all I can think of is to tell Samsung that this was not a helpful tweak to make.
Thanks for a thoughtful response. Yeah I do have the navbar hidden and when I re-enable it it shows up in a less annoying way. Disabling the navbar is amazing for speed as it unfies almost all navigation moves as swipes instead of presses. Too bad it does look like no one thought that rotation lock in this context as it's a bug not feature how I use it..
