Why superscripts have the wrong position in LO Impress

I need to insert several superscripts in my slides and when I tried, they appear like this (photo):
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as you can see, the -5 is basically in the middle of the number 10, far away from where it should be.

Any ideas of how can I solve this?

Thank you,

It works very well for me.

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Which operating system and which LibreOffice version do you use?

And what font and in what size?

With me Windows 10 Home; Version 1909; 64-Bit | LibreOffice, Version: (x64) | Liberation Sans 60…