Category
Check all that apply:
cotabby-crash-reports.zip
Summary
Cotabby crashes after running for a while when generating visual/OCR context from the frontmost window. The crash appears to be caused by a Swift checked-continuation misuse in extractText(from:) after OCR receives a tiny screenshot.
Environment
- macOS version: macOS 26.5 (25F71)
- Host app: Observed while Messages was active/frontmost, but likely not app-specific
- Cotabby engine: Open Source
- Model name (if Open Source):
gemma-4-E2B-it-Q4_K_M.gguf
- Accessibility permission granted: yes
- Input Monitoring permission granted: yes
- Screen Recording permission granted: yes
Steps to reproduce
- Launch Cotabby
0.4.1-beta build 41 with the Open Source engine enabled.
- Use Cotabby normally while switching between apps/windows with visual context or screenshot/OCR context enabled.
- Bring a very small/floating/status-style window or tiny UI element into the frontmost context. (I'm inferring this is the case from the error logs but I don't remember seeing specifically small elements on my screen.)
- Wait for Cotabby to generate suggestions or visual context.
Expected behavior
Cotabby should ignore screenshots/windows that are too small for OCR, fail gracefully, and keep running.
Actual behavior
Cotabby crashes/quits. The crash reports show EXC_BREAKPOINT / SIGTRAP, and unified logs show:
SWIFT TASK CONTINUATION MISUSE: extractText(from:) tried to resume its continuation more than once, throwing ocrFailed("The image is too small in at least one dimension 2 x 2 (each dimension has to be more than 2 pixels)")
Notes
Crash reports attached.
Both crashes have the same faulting pattern:
_assertionFailureCheckedContinuation.resume(throwing:)- Cotabby app frame
Related log before crash:
Visual context generation error: Screenshot OCR failed: The image is too small in at least one dimension 2 x 2
Category
Check all that apply:
cotabby-crash-reports.zip
Summary
Cotabby crashes after running for a while when generating visual/OCR context from the frontmost window. The crash appears to be caused by a Swift checked-continuation misuse in
extractText(from:)after OCR receives a tiny screenshot.Environment
gemma-4-E2B-it-Q4_K_M.ggufSteps to reproduce
0.4.1-betabuild41with the Open Source engine enabled.Expected behavior
Cotabby should ignore screenshots/windows that are too small for OCR, fail gracefully, and keep running.
Actual behavior
Cotabby crashes/quits. The crash reports show
EXC_BREAKPOINT / SIGTRAP, and unified logs show:SWIFT TASK CONTINUATION MISUSE: extractText(from:) tried to resume its continuation more than once, throwing ocrFailed("The image is too small in at least one dimension 2 x 2 (each dimension has to be more than 2 pixels)")Notes
Crash reports attached.
Both crashes have the same faulting pattern:
_assertionFailureCheckedContinuation.resume(throwing:)Related log before crash:
Visual context generation error: Screenshot OCR failed: The image is too small in at least one dimension 2 x 2