I have an issue where the mouse cursor(I-beam) on my Mac (High Sierra) is extra large. The large size only appears when viewing this Mac via Screen Sharing - the client Mac I'm on shows the correct size for the mouse cursor in local application, but whenever I select/hover text in the remote/host Mac the mouse cursor is huge. If I look at the local display for that Mac, the mouse cursor is the correct size, so it's not a system setting on the host, but some kind of display issue with Screen Sharing itself.
Does anyone have any idea how I might be able to reset this or adjust the size? (See below for a screen grab showing the large cursor on the far right. Compare with the second image showing the correctly-sized cursor, grabbed from the host Mac.)
Update: It appears that this only happens in certain applications. I get the large cursor in apps like iTerm and VS Code, but not in other text editing apps like Sublime Text, TextEdit, etc. - even if the selected display font for each app is the same. This just leaves me even more confused.