fix(spinbox): update cursor position in lv_spinbox_set_step

fix #1907

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## v7.7.2 (Planned to 28.11.2020)
+## v7.7.2 (Planned to 17.11.2020)
 ### Bugfixes
 - fix(draw_triangle): fix polygon/triangle drawing when the order of points is counter-clockwise
 - fix(btnmatrix): fix setting the same map with modified pointers
@@ -8,8 +8,9 @@
 - label: Repair calculate back `dot` character logical error which cause infinite loop.
 - fix(theme_material): remove the bottom border from tabview header
 - fix(imgbtn) guess a the closest availabe state with valid src
+- fix(spinbox) update cursor position in lv_spinbox_set_step 
 
-## v7.7.1 (04.11.2020)
+## v7.7.1 (03.11.2020)
 ### Bugfixes
 - Respect btnmatrix's `one_check` in `lv_btnmatrix_set_btn_ctrl`
 - Gauge: make the needle images to use the styles from `LV_GAUGE_PART_PART`

src/lv_widgets/lv_spinbox.c

@@ -198,6 +198,8 @@ void lv_spinbox_set_step(lv_obj_t * spinbox, uint32_t step)
     if(ext == NULL) return;
 
     ext->step = step;
+
+    lv_spinbox_updatevalue(spinbox);
 }
 
 /**