With the WIP fix for [SLACK-1], deadlocks no longer occur, but messages can still get delayed in the following manner:
[2024-08-13 17:23:53] slack-client.c:691 send_and_wait(): Failed to receive response to request 13
[2024-08-13 17:23:53] === Failed to post message to channel CHAN-REDACTED
[2024-08-13 17:23:53] === Someone is typing! 0: CHAN-REDACTED/USER-REDACTED
[2024-08-13 17:24:04] slack-client.c:964 slack_send(): Failed to receive reply for message 14 after 11 seconds
[2024-08-13 17:24:04] slack-client.c:691 send_and_wait(): Failed to receive response to request 14
[2024-08-13 17:24:04] === Failed to post message to channel CHAN-REDACTED
[2024-08-13 17:24:04] === Someone is typing! 0: CHAN-REDACTED/USER-REDACTED
[2024-08-13 17:24:15] slack-client.c:964 slack_send(): Failed to receive reply for message 15 after 11 seconds
[2024-08-13 17:24:15] slack-client.c:691 send_and_wait(): Failed to receive response to request 15
[2024-08-13 17:24:15] === Failed to post message to channel CHAN-REDACTED
[2024-08-13 17:24:15] === Someone is typing! 0: CHAN-REDACTED/USER-REDACTED
[2024-08-13 17:24:26] slack-client.c:964 slack_send(): Failed to receive reply for message 16 after 11 seconds
[2024-08-13 17:24:26] slack-client.c:691 send_and_wait(): Failed to receive response to request 16
[2024-08-13 17:24:26] === Failed to post message to channel CHAN-REDACTED
[2024-08-13 17:24:26] === Someone is typing! 0: CHAN-REDACTED/USER-REDACTED
[2024-08-13 17:24:37] slack-client.c:964 slack_send(): Failed to receive reply for message 17 after 11 seconds
[2024-08-13 17:24:37] slack-client.c:691 send_and_wait(): Failed to receive response to request 17
[2024-08-13 17:24:37] === Failed to post message to channel CHAN-REDACTED
[2024-08-13 17:24:37] === Someone is typing! 0: CHAN-REDACTED/USER-REDACTED
[2024-08-13 17:24:48] slack-client.c:964 slack_send(): Failed to receive reply for message 18 after 11 seconds
[2024-08-13 17:24:48] slack-client.c:691 send_and_wait(): Failed to receive response to request 18
[2024-08-13 17:24:48] === Failed to post message to channel CHAN-REDACTED
[2024-08-13 17:24:48] === Someone is typing! 0: CHAN-REDACTED/USER-REDACTED
[2024-08-13 17:24:59] slack-client.c:964 slack_send(): Failed to receive reply for message 19 after 11 seconds
[2024-08-13 17:24:59] slack-client.c:691 send_and_wait(): Failed to receive response to request 19
[2024-08-13 17:24:59] === Failed to post message to channel CHAN-REDACTED
[2024-08-13 17:24:59] === Someone is typing! 0: CHAN-REDACTED/USER-REDACTED
^C^C^C^C^C^C^C^C
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