Output of the blocks should end in a newline or null char

blocks/battery.sh

@@ -1,4 +1,4 @@
 #!/bin/sh
 ICON=""
 read -r capacity </sys/class/power_supply/BAT0/capacity
-printf "$ICON%s%%" "$capacity"
+printf "$ICON%s%%\n" "$capacity"

blocks/calendar.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
 ICON=""
-printf "$ICON%s" "$(date '+%a, %b %d, %R')"
+printf "$ICON%s\n" "$(date '+%a, %b %d, %R')"

blocks/cpu_temp.sh

@@ -9,7 +9,7 @@ read -r temp </sys/class/thermal/thermal_zone0/temp
 temp=${temp%???}
 
 if [ "$temp" -lt "$crit" ] ; then
-    printf "$ICONn%s°C" "$temp"
+    printf "$ICONn%s°C\n" "$temp"
 else
-    printf "$ICONc%s°C" "$temp"
+    printf "$ICONc%s°C\n" "$temp"
 fi