Ext version tested:
Ext 6.5.0.775 Modern, Ext 6.5.1.345 Modern, Ext 6.5.2.463 Modern, Ext 6.5.3.57 Modern

Fiddle:
https://fiddle.sencha.com/#view/editor&fiddle/2e7q


If a grid has only a few records, it will throw an exception when double tap blank area of the grid.

aaaaaaaa.png


For Ext 6.5.0.775 Modern, the exception stack:
Code:
ext-modern-all-debug.js:119249 Uncaught TypeError: Cannot read property 'clone' of null
    at constructor.triggerActionable (ext-modern-all-debug.js:119249)
    at constructor.fire (ext-modern-all-debug.js:13597)
    at constructor.fire (ext-modern-all-debug.js:22989)
    at constructor.publish (ext-modern-all-debug.js:22952)
    at constructor.publishGestures (ext-modern-all-debug.js:23493)
    at constructor.onTouchEnd (ext-modern-all-debug.js:23667)
    at constructor.publishDelegatedDomEvent (ext-modern-all-debug.js:23572)
    at constructor.doDelegatedEvent (ext-modern-all-debug.js:23015)
    at constructor.onDelegatedEvent (ext-modern-all-debug.js:23002)

For Ext 6.5.1.345 Modern, Ext 6.5.2.463 Modern, Ext 6.5.3.57 Modern:
Code:
Uncaught TypeError: Cannot read property 'getDataIndex' of null
    at constructor.getEditor (VM166 ext-modern-all-debug.js:131636)
    at constructor.activateC*ell (VM166 ext-modern-all-debug.js:131688)
    at constructor.triggerActionable (VM166 ext-modern-all-debug.js:124129)
    at constructor.fire (VM166 ext-modern-all-debug.js:13892)
    at constructor.fire (VM166 ext-modern-all-debug.js:23623)
    at constructor.publish (VM166 ext-modern-all-debug.js:23586)
    at constructor.publishGestures (VM166 ext-modern-all-debug.js:24132)
    at constructor.onTouchEnd (VM166 ext-modern-all-debug.js:24318)
    at constructor.publishDelegatedDomEvent (VM166 ext-modern-all-debug.js:24217)
    at constructor.doDelegatedEvent (VM166 ext-modern-all-debug.js:23649)

I wonder why the word 'ce*ll' is forbidden to post...