This is a question somewhat related to another question about advisors on sabbatical.
I started what I thought would be my final semester of my PhD (applied math) in January. I have already passed quals and finished my proposal for candidacy without issue. (So I'm not reaching to say that I could/should be in my final semester).
However, in December of last year, my advisor suddenly informed me that he has decided to go on sabbatical (1 year) 800 miles away. He did not offer to take me with him or anything.
In the meantime, I'm stuck trying to grind out the last chapter of my dissertation. He'll call about once a week to check in on my progress. Emails outside of then have pretty much gone unanswered; his one reply was a terse "Thanks, I'll start looking at this.". He has told me outright that the papers "we" (meaning I write them and develop them, he edits them) are working on are his only work right now.
I am not aware of all the minutia of how sabbaticals are approved at my university, but it seems like a sabbatical to just work a few hours a day while sipping coconut milk is not in keeping with the purpose of the sabbatical.
Overall, my advisor hand waves all of this by just saying that he will pay me an RA-ship this summer if I can't graduate by spring, as if some pittance of money can buy me off. I would of course like to obtain a real job at some point. I have an offer on the table for a full time position, but it relies on me being able to finish by May or so.
I understand that I may not know the whole story. There could be undisclosed health issues, family issues, mental issues, etc..
Is it normal for a PhD advisor to leave on sabbatical in a student's final semester?
Is there anything a PhD student can do about their supervisor going on sabbatical during the student's final semester?