Sonnect 4: Edits gets stuck in agent mode

[jonaswerme]

Type: Bug

Sonnet 4 is still having issues with getting stuck during edits.
There seems to be two cases where it gets stuck:

1. Applying edits gets stuck at 98-100% and never continues.
   In these cases the edit is actually applied, it just seems the agent is not picking up a callback about this being done.
2. Generating edits, never goes to apply even and just leaves it like this for inifity or until you stop it. This is usally triggered after 1. has already happened in the same session.

You can break it out of these problems by asking it to actively do something else or force an action that is not ending in the same edit. You can also tell it to use other editing "tools" or mind the syntax as it keeps breaking edits, this usually makes it work for a little bit again until the amnesia kicks in. This seems to happen more frequently when we are obviously routed to dumber/quantized models instead of getting the real thing...

Either way this is a huge waste of our request quotas as it can take hours to get a single little thing right with continious reprompting. This issue comounds on the other issues that is already completely draining our quotas without getting a anything that can actually be used out of the models.

Extension version: 0.29.2025070703
VS Code version: Code - Insiders 1.102.0-insider (96f1890, 2025-07-04T15:15:02.963Z)
OS version: Windows_NT x64 10.0.26100
Modes:

System Info

Item	Value
CPUs	AMD Ryzen 5 5600X 6-Core Processor (12 x 3700)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	31.93GB (3.17GB free)
Process Argv	--crash-reporter-id 6184e59b-eb56-4178-9e91-ec311e8e4aee
Screen Reader	no
VM	0%

[jonaswerme]

Just had this happen 5 times in a row and was not able to recover in session. Had to restart IDE to unlock it.
Really does seem like a bug. Even tried switching models and the same thing happened with a different provider/hosting partner.
I'll log a few request ids next time it happens.

[vs-code-engineering]

Thanks for creating this issue! We figured it's covering the same as another one we already have. Thus, we closed this one as a duplicate. You can search for similar existing issues. See also our issue reporting guidelines.

Happy Coding!