title: Solana transaction never gets picked up by the cluster
body: <p>For the last few weeks or so, we are having the following issue:</p>
  <p>Some of our transactions, when sent via <code>sendRawTransaction()</code> never get picked up by the network (if we look up the txid in the explorer, it's never there), and yet web3js doesn't error out.</p>
  <p>We use <code>&quot;@solana/web3.js&quot;: &quot;^1.44.1&quot;</code></p>
  <p>This has started happening to us like 2-3 weeks ago:</p>
  <ul>
  <li>This issue affects some sets of transactions that all share the same instructions + amount of signers and accounts.</li>
  <li>It repros 100% of the time for all transactions in those sets. No matter the state of the network or how many times we retry, they never get picked up.</li>
  <li>We don't get any error back from web3.js, such as transaction limit hit</li>
  <li>They all work in devnet, but not in mainnet!</li>
  </ul>
  <p>For one of these tx, I removed one instruction+signer and it started working, so I imagine there's some limit we're hitting, but I can't tell which or how to even determine the limit.</p>