Copy and Paste issue on the same document - unwanted spacing on top and overset text
I recently had a new work laptop and re-downloaded the Adobe software. Since then when I create a text box, there is an extra spacing above the text (always set to 'ascent' in First Baseline'). I have checked the settings and everything looks fine and is set as previous.
Problem comes when I try to copy and paste a text box (from an existing document, created from another pc), the copied text box has an extra space/paddign on top, resulting the text move down and have an overset text box. It is done in the same document so everything should retain and shouldn't be conflict of styles. When I open a new document, this extra space stay too. We maintain a lot of existing documents (text-heavy) and loads of them are direct copy and paste jobs before we make further changes. It is not good when every text box I copy has an overset box as they don't sit right in the template and have to be repositioned.
Screenshots below:
original doc:

original doc with copied text box at the bottom:

It's a straightforward copy and paste and I really can't work out why it does this. All settings looks ok.
Another thing is, when I tried to shorten the original text box's width, the text shifts down (to where the unwanted top padding starts), resulting the second line overset.
oringal text box re-sized with no height change:

Please can anyone help? I wonder it's anything to do with a newer version of InDesign, I'm on 14.0.3?
Thanks all in advance.
