Remote object call triggers an assumption error

[Gungy2]

Describe the error

When calling a remote object method inside a parallelReduce.api_, an assumption error that should not be triggered can be seen.

To Reproduce

const ctcSol = remote(slbContractAddress, SLB);
void ctcSol.transferFrom(this, getAddress(), 5);

const slbsHeld = parallelReduce(5)
     .invariant(balance() > 0)
     .invariant(slbsHeld > 0)
     .while(true)
     .api_(Retailer.buySLBs,
            (volume) => {
                check(volume < slbsHeld, "Cannot buy more SLBs than currently in the pool");

                return [0, (apiReturn) => {
                    void ctcSol.transfer(this, volume);

                    apiReturn(true);
                    return slbsHeld;
                }]
            }
     );

Here SLB is simply an ERC20 (I cannot use a Token interface because I need a more complicated interface later). When Retailer.buySLBs is called with, for example, 2, nothing should be triggered. Instead, at runtime, we get:

Error: Retailer.buySLBs errored with Error: Assertion failed: Retailer_buySLBs: Cannot buy more SLBs than currently in the pool
  at reach standard library:57:5:application
  at ./index.rsh:69:22:application call to "check" (defined at: reach standard library:49:32:function exp)
  at ./index.rsh:67:22:application call to [unknown function] (defined at: ./index.rsh:67:22:function exp)
  at ./index.rsh:67:22:application call to [unknown function] (defined at: ./index.rsh:67:22:function exp)
    at /stdlib/dist/cjs/shared_impl.js:345:34
    at processTicksAndRejections (node:internal/process/task_queues:96:5)

Expected behavior

I would expect no error, the program should run normally. When the line void ctcSol.transfer(this, volume); is removed, everything works fine.

Thank you!