Brush preview issues entering on Drag Value

[Gasparoken]

Some times in certain conditions the edge preview of the erase tool is printed on the viewport just pressing Control+Option. This problem is just visual, no sprite modifications are done.

Steps to reproduce:

• New Sprite 200x200
• 100% zoom
• New Sprite 200x200
• 3200% zoom
• Pincel tool
• Press 'control' and hold + 'Alt' and hold (entering to dragging value to modify brush size).
• Result: the brush preview doesn't show:

Screen.Recording.2023-05-18.at.15.15.15.mov

Aseprite and System version

• Aseprite version: 1.3rc4
• System: macOS Ventura

[Gasparoken]

Some progress:
This issue happens when the editor has at least 2 opened documents (Sprite-01 and Sprite-02 for example) and the active one is the Sprite-02 + some "quick tool" (as eyedropper (Alt), or move tool (Cmd), or Hand tool (Space bar)) is activated just pressing and releasing.
When the mentioned conditions are meet, the current viewport still shows the Sprite-02, but internally some member variables of 'editor' corresponds to Sprite-01 (as m_document or m_proj). This mix can make several unexpected behaviors.
I'm still looking for the source of the error.