Unable to unshield with 0.44.0 and 0.44.1

[Rigorously]

Tested with Namada 0.44.0 and 0.44.1 on housefire-cotton.d3c912fee7462.

441c is a symlink to namadac.
$NODE is --node https://rpc.knowable.run/

Accounts

implicit account

441c balance --owner hf44 --token nam $NODE
nam: 1794.5

another implicit account

441c balance --owner hf2 --token nam $NODE
nam: 99.75

spending key (birthday = 124570)

441c balance --owner sk44 --token nam $NODE
Last committed masp epoch: 1329
converting current asset type to latest asset type...
nam: 50

Shielded sync

(scanned multiple times after adjusting birthday a few blocks before the actual account creation time, so number of blocks may look inconsistent)

441c shielded-sync $NODE
==== Shielded sync started using ledger client ====

fetched : 100%|████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 138/138 [00:02<00:00, 66.16it/s]scanned : 100%|█████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 2/2 [00:02<00:00, 0.95it/s]applied : 100%|█████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 2/2 [00:02<00:00, 0.95it/s]
Syncing finished

441c shielded-sync --with-indexer https://masp.knowable.run/api/v1
==== Shielded sync started using indexer client ====

fetched : 100%|██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 73/73 [00:01<00:00, 68.76it/s]scanned : 0it [00:00, ?it/s]                                                                                                                                                                                 
applied : 0it [00:00, ?it/s]                                                                                                                                                                                 

Syncing finished

With implicit account as gas payer

441c unshield --source sk44 --target hf2 --token nam --amount 1 --gas-payer hf44 $NODE 
Enter your decryption password for sk44: 
converting current asset type to latest asset type...
Enter your decryption password for hf44: 
Transaction added to mempool.
Transaction hash: 045C65DE46EB04C4EF3D9B18A1BBFC21805004A140377E4EF2B2A1F0B32888B8
Transaction B01A60142DC1E5D28CD6B920524CA54183B6DF08AE27CF95B77B04A2CEA953D4 was rejected by VPs: [
  "tnam1pcqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqzmefah"
]
Errors: [
  [
    "tnam1pcqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqzmefah",
    "Native VP error: Spend description refers to an invalid anchor"
  ]
]
Changed keys: [
  "#tnam1pcqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqzmefah/commitment_tree",
  "#tnam1pcqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqzmefah/nullifiers/19E8E162C79525A60F7304D8D1412D904015A7690682516D4DEAA67E924B2899",
  "#tnam1pyqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqej6juv/#tnam1qy440ynh9fwrx8aewjvvmu38zxqgukgc259fzp6h/balance/#tnam1pcqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqzmefah",
  "#tnam1pyqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqej6juv/#tnam1qy440ynh9fwrx8aewjvvmu38zxqgukgc259fzp6h/balance/#tnam1qrdl25wkn567q52pzk2accw69f780e95ms0wthz3"
]

With disposable gas payer

441c unshield --source sk44 --target hf2 --token nam --amount 1 --gas-spending-key sk44 --disposable-gas-payer $NODE 
Enter your decryption password for sk44: 
Created disposable keypair with alias disposable-key-48D49D7CE36D6D0F01B00E4F13F2D1DFD391BB69-created-at-1730130452
converting current asset type to latest asset type...
Error: 
   0: Encountered error while broadcasting transaction: StringTracer: server error: {"codespace":"","code":9,"data":"","log":"Mempool validation failed: Error trying to apply a transaction: Error while processing transaction's fees: Failed masp fee payment","hash":"22096F60FCB3622C71B7DA026BFEA216EAEFA9002809A4B2B27C102B9767DB0B"}

[Rigorously]

Also happens with Namada v0.44.1-5-g7054446 tiago/backport-murisi-masp-fixes on housefire-cotton.d3c912fee7462.

Also happens with Namada v0.44.1 in a local cluster.

Trying to reproduce with tiago/backport-murisi-masp-fixes in a local cluster - Yes, it happens in that case too. Not sure what triggered it. It seems intermittent. Sometimes it works, sometimes it fails.

[sug0]

how did you build namadac? did you use make build?

[Rigorously]

how did you build namadac? did you use make build?

I used this Docker cluster and set NAMADA_TAG:-tiago/backport-murisi-masp-fixes in docker-compose.yml.
https://github.com/EmberStake/namada-selfhost

In the Dockerfile:

ARG NAMADA_TAG=main
RUN git clone https://github.com/anoma/namada.git
WORKDIR /__w/namada/namada
RUN git checkout ${NAMADA_TAG}

RUN make build-release
RUN make build-wasm-scripts

[Rigorously]

For each time I shield to a spending key, I can unshield an equal number of times without syncing. Is that intended behavior?

[grarco]

For each time I shield to a spending key, I can unshield an equal number of times without syncing. Is that intended behavior?

Yes it's the current behavior, I've left an explanation for this at point 2 of this comment #3961 (comment) (didn't see your message here)