Resistance is increasing in the main European countries. ALS and ACCase inhibitors are the main modes of action involved. The rice cropping system is quite critical since it is monocrop with almost no crop rotation.
Some actives helped in managing resistance in the past but those are not allowed any more in Europe. Farmers try to solve issue using herbicides not authorized in rice sometimes, increase rates, spray multiple inefficient applications. No herbicides has recently been introduced with different mode of action.