What are the current rules regarding visa amnesties in Thailand?

@Keef *******

I would say you are mostly correct. Things get a little more confusing with a multi entry visa but with a single entry visa, your visa is done the minute you walk up to immigration. What you get is a permit to stay stamp in your passport which can vary depending on the type of visa you had. The permit to stay can be extended to new permit to stay at immigration. It is obvious you understand the concepts, I am just trying to help a bit with terminology.

@Gabriel *****

I am afraid you are getting about 15 steps ahead of me. I have never personally gotten an extension as I have used multi entry tourist visas. Every permit to stay I have ever gotten on initial entry or subsequent entries have been in the form of a red stamp directly in the passport. In your case I really cannot say what this document in your passport is. In your photo I note a reference to the Kingdom of Cambodia? Perhaps that just sneaked into the photo from another page on your passport? In normal times a permit to stay based on a single entry visa can only be extended one time. The visa amnesty made a mess of all that. I am not sure what is planned regarding amnesty and I am not sure the Thai officials do either. I think it might be time for you to go t Thai immigration to get sorted out.

@Scott *********

thanks for that. your mention of "new permit to stay", after the initial "permit to stay", I use the terminology stamped in the passport. Both may be permits of stay, I wanted to clear up the distinction of the first versus the 2nd permit to stay.