Tab Autocomplete / Supercomplete not working

[arshcaria]

The tab autocomplete and supercomplete do not work on ALL versions since 1.12.35, including the latest one 1.12.43.

1.12.33 is the last version that has proper autocomplete on my machine. But this version does not offer opus 4.5 and gpt 5.2.

Please fix it.

FYI => Ton of errors of completion_provider.go in the windsurf logs

Windsurf log output

2025-12-13 00:21:45.591 [info] 2025/12/13 00:21:45 maxprocs: Leaving GOMAXPROCS=32: CPU quota undefined
2025-12-13 00:21:45.678 [info] I1213 00:21:45.674000 15628 main.go:624] Setting GOMAXPROCS to 4
2025-12-13 00:21:45.678 [info] I1213 00:21:45.674000 15628 main.go:840] Starting language server process with pid 15628
2025-12-13 00:21:45.693 [info] I1213 00:21:45.678000 15628 server.go:363] Language server will attempt to listen on host 127.0.0.1
2025-12-13 00:21:45.693 [info] I1213 00:21:45.679021 15628 server.go:370] Language server listening on random port at 58743
2025-12-13 00:21:46.673 [info] I1213 00:21:46.669484 15628 server.go:503] Created extension server client at port 58738
2025-12-13 00:21:46.884 [info] (Windsurf) 2025-12-13 00:21:46.883 [INFO]: [Terminal] Shell integration DETECTED for shell: C:\Programs\Git\bin\bash.exe
2025-12-13 00:21:48.048 [info] (Windsurf) 2025-12-13 00:21:48.047 [INFO]: Language server started
2025-12-13 00:21:48.060 [info] (Windsurf) 2025-12-13 00:21:48.059 [INFO]: LS lspClient started successfully
2025-12-13 00:21:58.850 [info] I1213 00:21:58.850480 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:02.063 [info] I1213 00:22:02.063274 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:02.155 [info] I1213 00:22:02.154987 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:02.884 [info] I1213 00:22:02.884246 15628 completion_provider.go:869] err: canceled: context canceled: context canceled
2025-12-13 00:22:03.400 [info] I1213 00:22:03.399762 15628 completion_provider.go:869] err: context canceled
2025-12-13 00:22:03.432 [info] I1213 00:22:03.432355 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:03.686 [info] I1213 00:22:03.684961 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:04.932 [info] I1213 00:22:04.931816 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:05.116 [info] I1213 00:22:05.115740 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:05.585 [info] I1213 00:22:05.583692 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:05.663 [info] I1213 00:22:05.662846 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:05.873 [info] I1213 00:22:05.873045 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:06.116 [info] I1213 00:22:06.111528 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:06.173 [info] I1213 00:22:06.173138 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:06.422 [info] I1213 00:22:06.421667 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:06.674 [info] I1213 00:22:06.674184 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:07.016 [info] I1213 00:22:07.016662 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:07.110 [info] I1213 00:22:07.109564 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:07.346 [info] I1213 00:22:07.345718 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred
2025-12-13 00:22:07.529 [info] I1213 00:22:07.528424 15628 completion_provider.go:869] err: invalid_argument: an internal error occurred: an internal error occurred

[msyagli]

Same here. It feels so slow and most of time it does not work.

[Nalleyer]

same issue here.
created a empty folder and with a debug.py
type a hello function and wait, nothing happens.
my log is:

2025-12-16 21:33:12.453 [info] 2025/12/16 21:33:12 maxprocs: Leaving GOMAXPROCS=20: CPU quota undefined
2025-12-16 21:33:12.659 [info] I1216 21:33:12.649052 48844 main.go:624] Setting GOMAXPROCS to 4
2025-12-16 21:33:12.660 [info] I1216 21:33:12.650052 48844 main.go:840] Starting language server process with pid 48844
2025-12-16 21:33:12.661 [info] I1216 21:33:12.661055 48844 server.go:363] Language server will attempt to listen on host 127.0.0.1
2025-12-16 21:33:12.663 [info] I1216 21:33:12.662061 48844 server.go:370] Language server listening on random port at 9328
2025-12-16 21:33:13.139 [info] (Windsurf) 2025-12-16 21:33:13.138 [INFO]: [Terminal] Shell integration DETECTED for shell: C:\Program Files\PowerShell\7\pwsh.exe
2025-12-16 21:33:15.469 [info] I1216 21:33:15.468522 48844 server.go:503] Created extension server client at port 9269
2025-12-16 21:33:16.339 [info] (Windsurf) 2025-12-16 21:33:16.337 [INFO]: Language server started
2025-12-16 21:33:16.355 [info] (Windsurf) 2025-12-16 21:33:16.354 [INFO]: LS lspClient started successfully

the diagnostics:
windsurf-diagnostics.txt