No, i don't want a refund - it's an early access game. And i love the concept of it!
I tried v7.17 today on 2 Linux machines - still the same problem. I tried any graphic options and resolutions
Also, i notices that some stats aren't right. For example: the temperature on the first island is 5950°C. Also the stats of leaves etc. are very different from the windows version (all have 5 suns, etc.).
For the windows-version, it was exactly the problem you described - it works fine with all other animals.