Deploy from zip: potential file size issues

OS: MacOS
Azure CLI version: 2.0.75

Steps to repro ( 1) and 2) can be done via the `Azure Function CLI`):
1. Create an Azure function using VS Code.
2. Deploy the function from VSCode (i.e. so that it does a zip deploy)
3. Download the zip file from the container where it was deployed to by VSTS (i.e. `azureappservice-run-from-package`)
4. unzip the file
5. rezip
6. Deploy using the azure cli commands
```
az functionapp deployment source config-zip --resource-group {rg} --name {funcname} --src {zipFile}
```
7. zip file uploaded to the `function-releases` container
8. Function never starts in Azure

However, if you follow the same steps and redeploy the **original unmodified file** the deployment will succeed and the function will start. From my investigation the only thing that seems obviously different is the archive size after re-packing. Note that using the Azure Function CLI and publishing a function from the command line consistently produced the smaller sized zip (just like the deploy from VSTS).