Hello,
Our developer has completed its investigation into this issue.
In the
Control Table the column for the tooltip text (Help Column) is populated correctly, but the tooltip seems to not be displayed. It seems that this is an undocumented and unsupported edge case for MSI, which doesn't support tooltips for static controls.
Our developer found a workaround which achieves what you want. In order to display an image with a tooltip, you can use the
"Image Button" control and modify the image before uploading it. In order for this to work a image which contains six original images one next to each other needs to be uploaded to the Image button. For example, if we want to display this image:

- 1.png (1.5 KiB) Viewed 5474 times
the following image needs to be uploaded to the Image Button

- 2.png (32.07 KiB) Viewed 5474 times
You also need to enable the
Enhanced User Interface from the
Themes page, thus the package will be changed to EXE type.
Hope this helps!
Best regards,
Liviu