Investigate why reward and commission have null amount

[NicolasMahe]

Investigate why reward and commission have null amount:

[NicolasMahe]

even when block has a transaction, amounts are still null:
https://explorer.testnet.mesg.com/blocks/174087
https://explorer.testnet.mesg.com/txs/DD7C6ED57E73EE81F8AA710CA61A9274A41E3A87B1641F7D17FEE1C1028D48ED

but on other gaia's explorer, they simply don't display the events:
https://cosmos.bigdipper.live/blocks/1140875

[NicolasMahe]

I checked the order of beginBlocker and endBlocker of gaia and they don't do special stuff:
https://github.com/cosmos/gaia/blob/master/app/app.go:

app.mm.SetOrderBeginBlockers(upgrade.ModuleName, mint.ModuleName, distr.ModuleName, slashing.ModuleName)
app.mm.SetOrderEndBlockers(crisis.ModuleName, gov.ModuleName, staking.ModuleName)