I’m currently having trouble with interacting with the Roblox CoreGui. I can toggle buttons and such with the in-game menus, but when it comes to Roblox CoreGui such as reset, inventory, etc I cannot interact with it at all.
Just making sure if it’s just me or anyone else having this issue? (I’m thinking keybinds but not entirely 100% sure).
Please let me know in replies.
Yeah this has been the case for about 2 years now. Ever since Roblox released the new VR CoreGui it has been un-useable for anyone without an Oculus Rift.
Correction: even with a Rift it’s pretty unusable, since it only works properly at default HeadScale and with HeadLocked enabled 
Is there a fix for this or is my best bet to make a custom UI for reset, backpack, etc?
Your best bet is to make a custom UI-- unless you’d like to grab your nearest Oculus and use that instead.
It seems like Roblox has either given up on supporting the VR platform, have been working on it behind our backs for years and just don’t want to tell us (a man can dream), or just decided it’s not worth their trouble. It only ever really works on Oculus devices consistently nowadays.
I can’t even develop for VR much anymore, as the Valve Index’s controllers are completely unsupported, to the point that it’s nearly impossible for me to actually do anything meaningful like moving around or using tools. 
That’s awfully frustrating, especially since quite a few people are playing in VR now. Thanks for your help I suppose I’ll try the custom UI way, and if all else fails I’ll just have to ditch the VR aspect completely.
What buttons you have mapped your HTC cosmos controls?
By default, Roblox maps it all out for you I believe. You can then edit the controls afterwards which I don’t think it’s really needed nor there being much use as stated before the VR CoreGui is awfully buggy and broken.
i have the same problem,
but i tryed to use an xbox controler while using vive controler and when i press the “A” button of the xbox controler , i can actualy interact with the roblox CoreGui.
Just , i can’t use a xbox controler while having vive controlers in both hands…
I’ve just tried your method with the Xbox controller and isn’t ideal. It’s hard to use both VR controllers and Xbox controller whilst trying to see through your VR headset, especially when it’s doing all that for a singular UI button. Also note sometimes this method may crash your game and I’m not entirely sure why yet.