Steps to Reproduce

run the snippet on a mobile or tablet device

<zk>
    <signature height="200px" width="100%" onSave="output.setContent(event.getMedia())"/>
    <image id="output" width="100%"/>
</zk>

1. write some text
2. click save

Current Result

larger parts of the uploaded image are missing

Expected Result

the full image is saved

Debug Information

problem doesn't happen in 9.5.1.3

the issue is reproducible in chrome dev tools with mobile emulation enabled

Workaround