Spreadsheet file (*.xls) exported from BIRT Report showing xml in LibreOffice Calc

Before upgrading from LibreOffice 6.1 to LibreOffice
my *.xls files were opening properly whereas now these files are not opening properly.
These are the reports exported from BIRT Report tools as *.xls.

I tried to reinstall installed java jre on my pc but still the issue is not resolved.
Attaching the screenshot, xls files cannot be shared as it is bulky report.

Details -
Version: (x64)
Build ID: 7bcb35dc3024a62dea0caee87020152d1ee96e71
CPU threads: 4; OS: Windows 10.0;
UI render: default; VCL: win;
Locale: en-US (en_US); UI-Language: en-US
Calc: threaded
image description(/upfiles/15528511085066477.png)

I think It’s a regression bug https://bugs.documentfoundation.org/show_bug.cgi?id=123880

It will be fix in future version of LibreOffice