Highlighter function in acrobat reader does not work

Hi,

I recently downloaded the acrobat reader on a MacBook Air M2.

It was working fine initially, but there is one persisting issue related to highlighting text. For eg if the pink highlight is on and I select text to highlight, before, I could change the highlight color by simply clicking the text. But now, if a text is highlighted in pink, I have to press escape, then select another color by clicking the text -- but this makes the main highlight button in the top toolbar switch off, so I have to click it everytime to again highlight text.

Would be great if anyone can help me understand how to fix this as I have to highlight pretty often while reading and annotating journal articles. Thank you!