I suggested an edit to this answer a few days ago. The edit was approved by a moderator, but was then rejected by the OP of the answer. Which is totally fine, since my interpretation of what the OP wanted to say could be different from what he actually wanted to say.

However, the OP later edited his answer and copy-pasted my edit (I suppose from the Markdown Preview, since only the code tags are missing), as one can see in his edited answer.

I don't have a problem with the rejection of an edit in general from a more experienced user or the OP (it's the OP's post after all) nor the -2 reputation points make a big difference. But, many times, when suggesting an edit, an editor spends a significant amount of time trying to decipher and state clearly what the OP wants to say and I don't think that the edit rejection is fair in a case like this particular one.

In the end, the post is improved either way, which is the goal of an editor, but, in this case, the OP didn't even copy the suggestion properly, leading to a less easy to read post than that of the suggested edit.

Is this behavior acceptable in general? What can an editor do in such a case? Just accept the rejection? Comment under the OP's post and ask him to revert to the suggested edit? Make another edit suggestion?

I suggested an edit to this answer a few days ago. The edit was approved by a moderator, but was then rejected by the OP of the answer. Which is totally fine, since my interpretation of what the OP wanted to say could be different from what they actually wanted to say.

However, the OP later edited their answer and copy-pasted my edit (I suppose from the Markdown Preview, since only the code tags are missing), as one can see in their edited answer.

I don't have a problem with the rejection of an edit in general from a more experienced user or the OP (it's the OP's post after all) nor the -2 reputation points make a big difference. But, many times, when suggesting an edit, an editor spends a significant amount of time trying to decipher and state clearly what the OP wants to say and I don't think that the edit rejection is fair in a case like this particular one.

In the end, the post is improved either way, which is the goal of an editor, but, in this case, the OP didn't even copy the suggestion properly, leading to a less easy to read post than that of the suggested edit.

Is this behavior acceptable in general? What can an editor do in such a case? Just accept the rejection? Comment under the OP's post and ask him to revert to the suggested edit? Make another edit suggestion?