Office 5: in Calc, can't change font for all text in table pasted from Writer

In Writer, I have a table with Arial size 12 text.

I copy-paste it into Calc.

Then, in Calc, I select all and change font to Verdana size 10.

Most cells change fine, but some stay Arial size 12.

I have to go individually through each glitchy cell to change font.

Can you reproduce this on your Office 5?

Does Office 6 have the same issue?

It is really recommended to switch to a current LibreOffice version.

Download / Download LibreOffice

Before you change your text in Calc, you should select it and choose Format>Clear Direct Formatting from the menu. Then try changing your text as desired