`rofl machine top-up` fails with out of gas error

[matevz]

Noticed this behaviour:

$ oasis rofl machine top-up --deployment testnet --term hour --term-count 7
Using provider:     oasis1qp2ens0hsp7gh23wajxa4hpetkdek3swyyulyrmz (oasis1qp2ens0hsp7gh23wajxa4hpetkdek3swyyulyrmz)
Top-up machine:     default [00000000000002b6]
Top-up term:        7 x hour
You are about to sign the following transaction:
Format: plain
Method: roflmarket.InstanceTopUp
Body:
  {
    "provider": "oasis1qp2ens0hsp7gh23wajxa4hpetkdek3swyyulyrmz",
    "id": "00000000000002b6",
    "term": 1,
    "term_count": 7
  }
Authorized signer(s):
  1. AwF6GNjbybMzhi3XRj5R1oTiMMkO1nAwB7NZAlH1X4BE (secp256k1eth)
     Nonce: 284
Fee:
  Amount: 0.0013614 TEST
  Gas limit: 13614
  (gas price: 0.0000001 TEST per gas unit)

Network:  testnet
ParaTime: sapphire
Account:  test:dave
? Sign this transaction? Yes
(In case you are using a hardware-based signer you may need to confirm on device.)
Broadcasting transaction...
Transaction included in block successfully.
Round:            13506521
Transaction hash: 6904d3672e51abf7c033773ee39b9048da7d15806cff7ab3107a47189165dd28
Error: Execution failed with error: module: core code: 12 message: out of gas (limit: 13614 wanted: 13845)

Any --term-count value greater or equal 7 will fail with this error. Smaller values work fine.

Passing --gas-limit 13845 parameter works.