ILLUSTRATOR: Grouping Causes unpredicatable mask. Items become invisible

[bart_1865]

ILLUSTRATOR: Grouping Causes unpredicatable mask. Items become invisible

Grouping 2 or more items seems to create a mask and some elements become invisible. It seems very random since it has been happening with simple object and more complex one alike.

Grouping should just mean the items are selectable and positionable together, with not altering the appearance.

Basic function for file management and productivity.

This is happening since the last update Dec 2025 V30.1

[Kurt Gold]

Can you share a sample Illustrator file that contains some objects that show this anomaly while grouping them?