Great port. I'm encountering some issues either its collision detection or objects aren't rendering properly. it usually happens in centered of the room its like invisible walls.
Viewing post in The Binding of Isaac: Mobile (Unofficial Android Port) comments
Maybe u need to update System Webview, Follow this steps if u have old version
1. Install the Trichrome Library: Download and install the Trichrome Library first.
* Trichrome Library v141.0.7390.122
https://www.apkmirror.com/apk/google-inc/trichrome-library/trichrome-library-141...
2. Install System WebView: After installing the Trichrome Library, download and install the System WebView app.
* System Webview v141.0.7390.122
Important:
You must install the Trichrome Library before System WebView for both to install successfully.