Vaadin Bot

**Originally by @Peppe** --- This seems to be due to a change in communication layer of Vaadin Framework 7.6. It is investigated here: https://dev.vaadin.com/ticket/19684

**Originally by [email protected]_** --- **Attachment added:** [`GainLossData-Dups-8-14-14.xlsx`](https://trac-attachments.vaadin.com/trac/19663/GainLossData-Dups-8-14-14.xlsx) (15.8 KiB) Example for never-ending loading indicator

**Originally by [email protected]_** --- We are also seeing this problem when closing certain spreadsheet files. I've attached an example file that has this problem: GainLossData-Dups-8-14-14.xlsx. To reproduce this using the...

**Originally by @Peppe** --- Thank you for your report. Do you have Vaadin version 7.6.5 or newer in use? I suspect that this might be an unrelated issue to the...

**Originally by _mbranicky_** --- **Attachment added:** [`empty.xlsx`](https://trac-attachments.vaadin.com/trac/20180/empty.xlsx) (20.5 KiB) Original input file.

**Originally by _mbranicky_** --- **Attachment added:** [`empty_corrupted.xlsx`](https://trac-attachments.vaadin.com/trac/20180/empty_corrupted.xlsx) (13.3 KiB) Created but corrupted outcome file

**Originally by _mbranicky_** --- **Attachment added:** [`empty_corrupted_and_fixed.xlsx`](https://trac-attachments.vaadin.com/trac/20180/empty_corrupted_and_fixed.xlsx) (21.3 KiB) Repaired file

**Originally by [email protected]_** --- I reproduced this on http://demo.vaadin.com/spreadsheet/ yesterday. Which version is the demo running? I can reconfigured my application to 7.6.8. Unfortunately the bug was still there.

**Originally by _mbranicky_** --- **Attachment added:** [`repairment_log.xml`](https://trac-attachments.vaadin.com/trac/20180/repairment_log.xml) (0.8 KiB) Rapairment log file

**Originally by @Peppe** --- The demo is running on top up 7.6.6 so the original bug should not be present there either. I think you stumbled on a new bug.