Yes. What you have is condensation. When its warm inside and cool outside you can get condensation on the canvas (and the windows too). A few things to help that:
-Air flow - Crack the canvas a little at both ends and crack one of the roof vents. Air flowing along the canvas will reduce condensation.
-Turn the heat down and use the heated mattresses. We usually keep the furnace at 62 at night.
-Popup Gizmos or a home-made version. These will help with condensation in cool weather and reflect the sun in hot weather.
www.popupgizmos.com/
Try to reduce the condensation so its not dripping on you, but otherwise just wipe the canvas off in the morning or let the sun dry it out.
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2022 Columbus 379MBC (Previous 2013 Rockwood Roo 23 IKSS)
2023 F-350 (Previous 2017 F250, 2005 F-150)