Thunder is working well for me so far, but one of the consistent issues is that it uses an internal chrome-based browser to open links and may not be using Android's settings. Chrome for Android has no plugin support and links are ad riddled compared to Firefox with uBlock origin. Other apps that skip the bloat of loading a web page like imgurviewer aren't used. Is there a chance this will get changed anytime soon?
Hey! The ability to open directly in the external browser will be included in the next release!
Hopefully this helps alleviate some of those concerns you may have 😅If you have any other suggestions for improvements, feel free to let me know or create a GitHub issue on it!