Text position "flickering" and text render on a container wraping

[KammutierSpule]

Description

I have labels inside an object container. The container do not over lap:

What happens is that when I change the text in one of the tree labels, sometimes the others “flicker/shake” in horizontal position (left/right, maybe 1 pixel)

I was thinking if this is due obj redraw? but since the objects are not touching it should only update the one that text changed?

Also, sometimes one pixel vertical line of the text, is rendered on the left side of the container (pixels wrap).

This question may be related to:

"Draw random colored rectangles over the redrawn areas" understanding

While using v8.2.1, I created an empty screen I noticed while debugging the redraw areas, it draws areas depending on the lv_disp_draw_buf_init buffers size: [image] I was expecting just one full single rectangle. Is this supposed? does it has some meaning on relation to widget redraw? How does the buffer size relates with the widget redraw updates? Are there benefits from choosing a small or larger buffer?

What MCU/Processor/Board and compiler are you using?

STM32

What LVGL version are you using?

v8.1.0

What do you want to achieve?

Text do not flickers. No wrap pixels of text in the obj container

What have you tried so far?

Separate the obj containers

Code to reproduce

Screenshot and/or video

[KammutierSpule]

Here is a screenshot of the issue:

The text is inside a container object, it gets crop but there is a 1 pixel vertical glitch when it overlaps.