How to undo and redo the changes done by using text box and pencil editor tools in mobile devices. How can I delete some particular change in mobile devices

[durgamalleswariyeruva]

Attach (recommended) or Link to PDF file here:

Configuration:

• Web browser and its version:
• Operating system and its version:
• PDF.js version: 3.4.406
• Is a browser extension:

Steps to reproduce the problem:

1. Open pdf in mobile devices(iPhon/android)
2. Add text by using Textbox and pencil drawer tool

What is the expected behavior? (add screenshot)
I need to delete pencil drawer changes and text box changes in mobile devices, when pdf is opened.
What went wrong? (add screenshot)
I am not able to delete pencil drawer changes in pdf .
Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

[durgamalleswariyeruva]

@calixteman , Can I get any solution for my issue?

[Snuffleupagus]

PDF.js version: 3.4.406

Sorry, but that version number doesn't actually exist.

Steps to reproduce the problem:
1. Open pdf in mobile devices(iPhon/android)
2. Add text by using Textbox and pencil drawer tool

Assuming that you're referring to https://github.com/mozilla/pdf.js#online-demo, which isn't really clear, then please note that it's intended for desktop browsers in general and the built-in Firefox PDF Viewer in particular.