Multiple lines delete ends in unexplained behaviour

[Angeall]

Description

When you select multiple lines and delete them, the moment you click on another line makes everything disappear. Then, entering ESC just shows the content of the file again, with the previously deleted lines undeleted.

• Can you reproduce the issue?

Steps to reproduce

1. Select multiple lines, with a title in it
2. Press delete again to align the next title
3. Text should disappear
4. Press ESC to view text again, but to see your deleted text back

Expected behavior:

The lines to be deleted and the text not disappearing.

Actual behavior:

The lines are undeleted (except the title for some reasons) and the text disappear for a moment

Link to an example:

Versions

• Mark Text: 0.16rc2 and 0.15.1
• Operating system: Ubuntu 18.04

[Jocs]

@fxha Can you reproduce this issue?

[fxha]

Stack Trace:

Based on v0.16.0-rc-2 (custom build), so rather rc-3.

Uncaught TypeError: Cannot read property 'nodeType' of null
    at getNodeAndOffset (/src/muya/lib/selection/index.js:416)
    at Object.setCursorRange (/src/muya/lib/selection/index.js:482)
    at _r.setCursor (/src/muya/lib/contentState/index.js:194)
    at _r.partialRender (/src/muya/lib/contentState/index.js:246)
    at _r.inputHandler (/src/muya/lib/contentState/inputCtrl.js:324)
    at HTMLDivElement.<anonymous> (/src/muya/lib/eventHandler/keyboard.js:203)

Uncaught TypeError: Cannot read property 'text' of null
    at _r.checkNeedRender (/src/muya/lib/contentState/updateCtrl.js:42)
    at HTMLDivElement.<anonymous> (/src/muya/lib/eventHandler/keyboard.js:269)