Resizing sitemap frame

I have a weather frame which works well except when the amount of forecast text is too much for the item height.

This causes the text to drop down into the item below. Interestingly, the item below does resize so any below this appear fine. It’s just the first and second which don’t render properly.

Sitemap code:

Frame label="Weather"{		
	Text label="Forecast" icon="sun_clouds"{
		Frame label="Today"{
			Text item=Weather_TodayText
			Text item=Weather_TodayMin 
			Text item=Weather_TodayMax
		Frame label="Tomorrow"{
			Text item=Weather_TomorrowText
			Text item=Weather_TomorrowMin 
			Text item=Weather_TomorrowMax


Any thoughts?