When logging into websites via Oauth, pop-up windows are typically used. These can have unexpected behaviour in Orion RC and release. Popups are intended to allow account selection (eg. Google accounts), pass info the the main site window, and close.
Orion seems to occasionally keep these popups open/prevented from closing. This can be harmless but visually irritating or have erroneous behaviour.
For example, TikTok will create a Google login pop-up, which can be navigated as usual, but will not exit upon completion and login the original page, but will instead create a new instance within itself.
TikTok Login flow:
1.

2.

3.

Popup windows can just recursively open if I keep doing this:

Does not occur with AppleID logins due to unique login method, occurs with Facebook login.
This occurs in different Orion versions, on a fresh RC install. Does not occur in Safari/Chrome. On macOS 26.4 (25E246) on M1 Pro MacBook Pro.
The popup window is intended to allow selecting/sign-in for an external account. It should close upon completion and pass tokens to main webpage window.
Version 1.0.4 (143.4-rc), WebKit 624.1.7 Build date March 16, 2026 MacBook Pro (macOS Tahoe 26.4 build 25E246)
Tahoe (26)