Why is sam sync --watch command not automatically updating? - aws-lambda

Question

The command
sam sync --watch --stack-name sam-app --region us-east-1
is not working for me.
When I execute the sam synch --watch command, the first run it will update code as expected. But the --watch command should also detect local code changes and update the AWS Stack. The automatic update is not working for me. I followed the instructions from official aws documentation
Output:
sam sync --watch --stack-name sam-app --region=us-e
ast-1
The SAM CLI will use the AWS Lambda, Amazon API Gateway, and AWS StepFunctions APIs to upload your code without
performing a CloudFormation deployment. This will cause drift in your CloudFormation stack.
**The sync command should only be used against a development stack**.
Queued infra sync. Waiting for in progress code syncs to complete...
Starting infra sync.
Manifest is not changed for (HelloWorldFunction), running incremental build
Building codeuri: /mnt/c/Users/Topicus/Documents/AWS SAM workshop/sam-accelerate-test/sam-tutorial/hello_world runtime: python3.9 metadata: {} architecture: x86_64 functions: HelloWorldFunction
Running PythonPipBuilder:CopySource
Build Succeeded
Successfully packaged artifacts and wrote output template to file /tmp/tmpbib_f3ku.
Execute the following command to deploy the packaged template
sam deploy --template-file /tmp/tmpbib_f3ku --stack-name <YOUR STACK NAME>
Deploying with following values
===============================
Stack name : sam-app
Region : us-east-1
Disable rollback : False
Deployment s3 bucket : aws-sam-cli-managed-default-samclisourcebucket-ghvaajc0i25f
Capabilities : ["CAPABILITY_NAMED_IAM", "CAPABILITY_AUTO_EXPAND"]
Parameter overrides : {}
Signing Profiles : null
Initiating deployment
=====================
2023-02-13 14:27:45 - Waiting for stack create/update to complete
CloudFormation events from stack operations (refresh every 0.5 seconds)
-------------------------------------------------------------------------------------------------
ResourceStatus ResourceType LogicalResourceId ResourceStatusReason
-------------------------------------------------------------------------------------------------
CREATE_IN_PROGRESS AWS::CloudFormation::S sam-app Transformation
tack succeeded
CREATE_IN_PROGRESS AWS::IAM::Role HelloWorldFunctionRole -
CREATE_IN_PROGRESS AWS::CloudFormation::S AwsSamAutoDependencyLa -
tack yerNestedStack
CREATE_IN_PROGRESS AWS::ResourceGroups::G ApplicationResourceGro -
roup up
CREATE_IN_PROGRESS AWS::IAM::Role HelloWorldFunctionRole Resource creation
Initiated
CREATE_IN_PROGRESS AWS::CloudFormation::S AwsSamAutoDependencyLa Resource creation
tack yerNestedStack Initiated
CREATE_IN_PROGRESS AWS::ResourceGroups::G ApplicationResourceGro Resource creation
roup up Initiated
CREATE_COMPLETE AWS::ResourceGroups::G ApplicationResourceGro -
roup up
CREATE_IN_PROGRESS AWS::ApplicationInsigh ApplicationInsightsMon -
ts::Application itoring
CREATE_IN_PROGRESS AWS::ApplicationInsigh ApplicationInsightsMon Resource creation
ts::Application itoring Initiated
CREATE_COMPLETE AWS::IAM::Role HelloWorldFunctionRole -
CREATE_COMPLETE AWS::CloudFormation::S AwsSamAutoDependencyLa -
tack yerNestedStack
CREATE_IN_PROGRESS AWS::Lambda::Function HelloWorldFunction -
CREATE_IN_PROGRESS AWS::Lambda::Function HelloWorldFunction Resource creation
Initiated
CREATE_COMPLETE AWS::Lambda::Function HelloWorldFunction -
CREATE_IN_PROGRESS AWS::ApiGateway::RestA ServerlessRestApi -
pi
CREATE_IN_PROGRESS AWS::ApiGateway::RestA ServerlessRestApi Resource creation
pi Initiated
CREATE_COMPLETE AWS::ApiGateway::RestA ServerlessRestApi -
pi
CREATE_IN_PROGRESS AWS::ApiGateway::Deplo ServerlessRestApiDeplo -
yment yment47fc2d5f9d
CREATE_IN_PROGRESS AWS::Lambda::Permissio HelloWorldFunctionHell -
n oWorldPermissionProd
CREATE_IN_PROGRESS AWS::Lambda::Permissio HelloWorldFunctionHell Resource creation
n oWorldPermissionProd Initiated
CREATE_IN_PROGRESS AWS::ApiGateway::Deplo ServerlessRestApiDeplo Resource creation
yment yment47fc2d5f9d Initiated
CREATE_COMPLETE AWS::ApiGateway::Deplo ServerlessRestApiDeplo -
yment yment47fc2d5f9d
CREATE_IN_PROGRESS AWS::ApiGateway::Stage ServerlessRestApiProdS -
tage
CREATE_IN_PROGRESS AWS::ApiGateway::Stage ServerlessRestApiProdS Resource creation
tage Initiated
CREATE_COMPLETE AWS::ApiGateway::Stage ServerlessRestApiProdS -
tage
CREATE_COMPLETE AWS::Lambda::Permissio HelloWorldFunctionHell -
n oWorldPermissionProd
CREATE_COMPLETE AWS::ApplicationInsigh ApplicationInsightsMon -
ts::Application itoring
CREATE_COMPLETE AWS::CloudFormation::S sam-app -
tack
-------------------------------------------------------------------------------------------------
CloudFormation outputs from deployed stack
-------------------------------------------------------------------------------------------------
Outputs
-------------------------------------------------------------------------------------------------
Key HelloWorldFunctionIamRole
Description Implicit IAM Role created for Hello World function
Value arn:aws:iam::492917996281:role/sam-app-HelloWorldFunctionRole-19A7FE07PFT9I
Key HelloWorldApi
Description API Gateway endpoint URL for Prod stage for Hello World function
Value https://tzhcv2u047.execute-api.us-east-1.amazonaws.com/Prod/hello/
Key HelloWorldFunction
Description Hello World Lambda Function ARN
Value arn:aws:lambda:us-east-1:492917996281:function:sam-app-
HelloWorldFunction-0Z7T5JWyTwbt
-------------------------------------------------------------------------------------------------
Stack creation succeeded. Sync infra completed.
Infra sync completed.
CodeTrigger not created as CodeUri or DefinitionUri is missing for ServerlessRestApi.
Edit: also tried to with sam sync --stack-name sam-app --code --resource-id HelloWorldFunction --resource-id HelloWorldLayer --region us-east-1 --watch. Same result, no automatic update.
This does work: sam sync --stack-name sam-app --code --resource-id HelloWorldFunction --resource-id HelloWorldLayer --region us-east-1, but it's not automatic..