Given the dire situation and prospects for the future, doubling of the wheat prices is completely rational. Some countries are now also imposing export bans. [1] That won't stop price increases but at least they'll still have wheat and will be able to use it. Another crisis to keep an eye on is the global fertilizer shortage [2]. Near future looks pretty bleak.

[1] https://uk.finance.yahoo.com/news/hungary-ban-grain-exports-...

[2] https://www.wthitv.com/news/global-nitrogen-fertilizer-short...