If you encounter a large percentage of your Heatmap's total clicks happening in one random area of the page, this could be due to bot traffic or automated sessions.
While Hotjar has measures in place to prevent bot traffic from being picked up in your Heatmaps, they do sometimes slip through. Automated sessions are more difficult to prevent because they often look like a legitimate user. Automated sessions are usually caused by monitoring tools. These tools are designed to "visit" your pages throughout the day, to ensure they are still online and responsive.
Solution: If you suspect this might be the cause of the behavior, check with your IT or network team, to see if any monitoring services are running on your site. Examples of these services are Amazon CloudWatch Synthetics and Dynatrace Synthetic Monitoring.
If these services use specific IP ranges, you can block their IPs from your collected data.