No, I didn't get any issue while hosting this Kobweb site using Firebase Hosting. In fact, I was earlier considering GitHub Pages for hosting but when I came across some of the powerful features of Firebase Hosting, I decided to go for it. I am sharing those features below and we can use them for free (with some limits).
1. Preview Channel - Using preview channel feature, we can release the non production versions of the site for testing purpose. Similar to testing software on QA, UAT etc. If it works fine on those channels, from there we can directly take it to production.
2. Web request logs with Cloud Logging - We can see the request logs directly on Google Cloud. Useful if anything goes wrong with web request.