Cursor size issue when using ThinLinc. How to fix?

A visitor at ThinLinc’s website left the following message today.

Any advice is welcome. How can the user solve the issue?

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What is your main reason for visiting us today?

  1. Problem with cursor size when using ThinLinc

Are you able to find the information you are looking for?

  1. No (please tell us what’s missing) a guide to resize the cursor

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Sorry to say, but this is nothing I’ve heard of before.
Is this in the native client or Webaccess?

Regards,
Martin

Thanks, @martin, for your answer. Unfortunately, the visitor did not leave any extra information.