I just installed 3.05 for Windows and after the install was finished a web browser Window opened up to think me for installing the latest version. However the browser that opened up was not my default browser. I have Firefox as my default browser and Microsoft Edge opened up. I hate any browser that isn't Firefox. I have been using Firefox since was Netscape. I wish I could uninstall MS Edge as I consider it bloatware. If I wanted to use Chrome I would install the real thing not some clone with unwanted and unneeded features,
There are a few stand-alone programs, that if you invoke a browser, will open the browser of their choice, not yours. It's rare, but I've had it happen.
Quicken did this for a while. It's a stand-alone program, and normally you never see a browser in Quicken. But I did something that opened a browser window, and it was Edge. Not sure if it still does this, as it's rare for Quicken to open a browser window, and I haven't had it happen lately.
Having said all this, I have no idea if Florian would do this. Seems unlikely.