Sometimes when I copy and paste text into Notepad, it will paste the text in the default Notepad font and size, however, the latter half of the pasted line will be multiple font sizes smaller. I'm stumped as to why this is happening.

I wondered if it was perhaps some type of hidden formatting that was being copied into Notepad, but I believe that Notepad strips the formatting. I've subsequently taken the same text and tried copy and pasting it into URL bars and CMD prompts to strip any potential formatting (even though it was plaintext copied from web), and then re-pasted into Notepad, but it still leaves this phenomenon.

Additionally, when resizing the Notepad window, it will change what portion of the line is default sized and downsized, as seen in the screenshot posted below.

The three windows are actually the same Notepad window, each with a different resizing and the resulting text resizing.