My application stop loading while some xxx.cache.js loaded slowly

Support
#1

While network is not good(not good, but not bad), sometimes my cuba web stop loading.

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While use F12 debugging, the network activity stopped at loading app/VAADIN/widgetsets/com.tcx.toolkit.ui.AppWidgetSet/AEF9AA9146FC9FBB14CA3DE2A78BDB29.cache.js

Steps:

  1. open the url and login : https://devcm.iccloudy.com:8451/dttest/#!
    (login / pass:
    13813813888 / abc138138
    )
  2. web loading, but no pages displays, after a while, the web debug console reports a ERR_CONNECTION_RESET message.

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web activity stops at loading AEF9AA9146FC9FBB14CA3DE2A78BDB29.cache.js:

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  1. open the url in a new tab, web loaded correctly. the AEF9AA9146FC9FBB14CA3DE2A78BDB29.cache.js loaded from local disk.

This happens sometimes while network is not good, not reproduce always.

content in the server webapps/app/VAADIN/widgetsets/com.tcx.toolkit.ui.AppWidgetSet:

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Any ideas about how to solve this issue?