getrawtransaction hangs node when calling large size tx #34703

1. 
   FafoDevelopment commented at 10:27 pm on February 28, 2026: none

   Is there an existing issue for this?

   • I have searched the existing issues

   Current behaviour

   Using Bitcoin Core (bitcoin-qt) 30.2 console, the command “getrawtransaction 30794005e228089a56cca58b6ad85e8cc0667cdc06b0ee6f9fe72aa19f50acd2” leaves the software unresponsive. This transaction is non-standard and included in block 938523. The transaction is 3.98 MB in size according to a 3rd party block explorer.

   Expected behaviour

   Expected raw transaction output in Console

   Steps to reproduce

   Run “getrawtransaction 30794005e228089a56cca58b6ad85e8cc0667cdc06b0ee6f9fe72aa19f50acd2”

   (warning: expect your node to become unresponsive)

   Relevant log output

   No response

   How did you obtain Bitcoin Core

   Compiled from source

   What version of Bitcoin Core are you using?

   30.2

   Operating system and version

   Ubuntu 24.04.2 LTS

   Machine specifications

2. 
   jmoik commented at 12:53 pm on March 1, 2026: none

   not reproducible on command line on mac, might be an issue specific to the qt front end
3. 
   l0rinc commented at 9:47 am on March 2, 2026: contributor

   not reproducible on command line on mac, might be an issue specific to the qt front end

   Yeah, quick reproducer indicated the source problem being huge rich-text insertion/layout on the main thread, not transaction lookup/serialization (i.e. GUI problem, not RPC problem)

4. maflcko added the label GUI on Mar 2, 2026
5. 
   fanquake commented at 11:49 am on March 2, 2026: member

   Should be moved to the GUI repo then? cc @hebasto
6. 
   hebasto commented at 11:53 am on March 2, 2026: member

   Moved to https://github.com/bitcoin-core/gui/issues/932.
7. hebasto closed this on Mar 2, 2026

   ---

Contributors
FafoDevelopment jmoik l0rinc fanquake hebasto

Labels
GUI