[bug][Fill] Background color change does not apply consistently to multiple selected elements

[spartan-uyen]

Describe the bug

Summary:
When multiple elements are selected and the background color is changed using the color picker, only one element updates correctly to the final selected color, while the second element retains the initial color selected during the dragging process.

Step to reproduce:

1. Select two text elements.
2. Change the background color by dragging the color picker.
3. Observe the background color of both elements.

Actual result:

• Only one element updates correctly to the final selected color.
• The second element retains the first color selected during the dragging process instead of the final one.
• Please watch this video: https://github.com/user-attachments/assets/6f2e86f1-64f0-4f18-adfc-25442d7690c5

Expected result:
Both elements should update to the final selected color when adjusting the background color.