Assuming, yes, I used that word on purpose, that both members are plate material, then you would have a double bevel groove weld which achieves CJP parameters upon completion. At which point you would add your reinforcing fillet weld. There is where the question comes in as the CJP doesn't need an all around symbol.
So, on the fillet welds, instead of extending up the flag poles for the added process they should have used the two reference line welding symbol with the fillet weld indicated only on one side of the reference line and then used the all around symbol.
Can they use it like they did? ...Well, not technically correct but probably. May be time for some clarification but to me all they are indicating is that the reinforcing fillet weld extends all the way around the plate.
Engineers and detailers can do anything they want even when it is not correct per A2.4. But, that leaves it up to the fitter, welder, and inspectors to make sure they have completed the weld to the expectations of the engineer. Like I said, if you are hesitant, RFI.
Brent