[NTG-context] useblocks troubles

Dear all, When selecting multiple blocks: \useblocks[someblock,otherblock], the blocks are selected but the before and after statements are not processed. Is the expected behaviour? Tia, Bernard Example: \defineblock[someblock] \defineblock[otherblock] \setupblock[someblock] [before={ -Begin- }, after={ -End- }] \hideblocks[someblock,otherblock] \starttext \beginsomeblock SOMEBLOCK \endsomeblock \beginotherblock OTHERBLOCK \endotherblock \section{No before or after} \useblocks[someblock,otherblock] \useblocks[otherblock,someblock] \section{Separately they work} \useblocks[someblock] \useblocks[otherblock] \stoptext