# Mobile UI issue -- PDF UI diappears

**URL:** https://pdfjs.community/t/mobile-ui-issue-pdf-ui-diappears/500
**Category:** Bug Reports
**Created:** [February 15, 2021, 5:02pm UTC](https://pdfjs.community/t/mobile-ui-issue-pdf-ui-diappears/500 "2021-02-15T17:02:21Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![srswebsolutions](https://avatars.discourse-cdn.com/v4/letter/s/e56c9b/32.png) [@srswebsolutions](https://pdfjs.community/u/srswebsolutions)
#### Post date: [February 15, 2021, 5:02pm UTC](https://pdfjs.community/t/mobile-ui-issue-pdf-ui-diappears/500/1 "2021-02-15T17:02:21Z")

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We are getting a error in Mobile device wile trying for adding Signature  
Condition 1 : Add New Signature , Draw the Signature , Not Placing the Created Signature , but trying to add the New Signature , The PDF UI be comes Blank

Condition 2 : Add New Signature , Draw the Signature , Placing the Created Signature, Then Remove Signature , Then Add New Signature , The PDF will disappear

This scenario is found only on Mobile devices

 ![image](https://canada1.discourse-cdn.com/flex031/uploads/pdfjscommunity/original/1X/d9b0d27df35de991b3a488dc63520f2574ca8fbc.png)