Description:
To recreate an instant messaging chat, I have created 6 styles (3 for sent messages and 3 for received messages) that share the same background to maintain aesthetic coherence. The styles are named N1-Recibidos, N2-Recibidos, and N3-Recibidos (to received), as well as N1-Enviados, N2-Enviados, and N3-Enviados (to sent). They work cyclically in that precise order to facilitate the creation of a WhatsApp-style messaging interaction.
The normal sequence is the 3 sent styles followed by the 3 received styles. However, it may occur that two or more sent sequences and/or two or more received sequences are required.
The problem arises when transitioning from N3-Received to N1-Received. In this case, as can be seen in the attached image, the backgrounds merge when there should be a blank space.

Steps to Reproduce:
1. Apply N1-Recibido and write a text.
2. Press ENTER (N2-Recibido is applied)
3. Write the text.
4. Press ENTER (N3-Recibido is applied)
5. Write the text.
6. Press ENTER (N1-Enviado is applied)
7. Write the text.
8. Press ENTER (N2-Enviado is applied)
9. Write the text.
10. Press ENTER (N3-Enviado is applied)
11. Write the text.
Repeat 1 to 5. In step 6 apply N1-Recibido.

Actual Results:
The background between N3-Received and N1-Received, or between N3-Sent and N1-Sent, merges.

Expected Results:
There should be a blank space.


Reproducible: Always


User Profile Reset: Yes

Additional Info:
This issue has been occurring since versions prior to the latest release (7.6).

In previous versions and on other operating systems, a blank space is displayed when entering the style editing and clicking the apply button without making any modifications.
https://youtu.be/-E3jxRT2W4Y?si=Khkn7JvISiHqUwnG