String.format(): Discrepancy between display of result in edit vs run or debug modes

[bentron2000]

Have noticed a bug in version 0.16.1 in the implementation of String.format() Discrepancy between display of result in edit vs run or debug modes.

To Reproduce:

1. Create a label on any screen.
2. Make the label an expression with String.format(".2f",1.1)
3. In EDIT mode, observe the label correctly display as 1.10
4. Switch to RUN or DEBUG mode, observe the label display as .2f

Expected behavior Expect the result to be 1.10 in both cases.

Desktop :

• MacOS 14.4
• Version 0.16.1

** LVGL version**

• 9.x

[mvladic]

Format specification for the String.format function when used in LVGL project must use % prefix. So, your expression should be String.format("%.2f",1.1).