Since they bizzy with the ATC , let em look why ATC does this a lot of the time , while decending for landing i get this with lots of flights :
Directed to 5000 feet , OK , cleared to gislu , then go up to 14K ???
Yesterday i was flying a DA62 - max altitude is FL200 , ATC Climb and maintain FL260 ??? and no means to tell atc that FL260 is not possible…