How can I enable getblocktemplate to incorporate sub 1 sat/vbyte transactions?

I’ve added minrelaytxfee=0.000001 to my bitcoin.conf to permit for 0.1 sat/vbyte transactions to enter my node’s mempool.

I can see that is working when looking mempool transactions, and likewise when operating getmempoolinfo:

{
  ...
  "mempoolminfee": 0.00000100,
  "minrelaytxfee": 0.00000100,
  "incrementalrelayfee": 0.00001000,
  ...
}

Nevertheless, after I run getblocktemplate, solely transactions with a minimal of 1 sat/vbyte are getting included within the candidate block. So even when there are sufficient transactions within the mempool to fill a candidate block, it isn’t really making a 1.00 vMB block of transactions except there are sufficient 1 sat/vbyte transactions within the mempool.

Is there a purpose why getblocktemplate is not choosing from all of the potential transactions within the mempool, and nonetheless solely together with transactions with a minimal of 1 sat/vbyte?

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