PyCharm editor does not respond to mouse clicks on macOS 26.3 (M1)

Hi all!

I am experiencing a persistent issue with PyCharm on a MacBook Air (M1, Apple Silicon).

System details:

• macOS 26.3 (Build 25D125)
• MacBook Air (M1)
• Issue reproduced on multiple recent PyCharm versions (including latest stable)
• Both Apple Silicon and Intel (x64) builds tested
• Rosetta is installed and running

Problem description:
The PyCharm interface loads and responds normally (menus, tabs, window controls, drag-and-drop, maximize/minimize, etc.), but the code editor does not respond to mouse clicks. I cannot place the cursor in the editor using the mouse.

Keyboard input works in some cases, and during initial project loading (e.g., "Updating skeletons...") I am sometimes briefly able to interact with the editor. However, once indexing completes, mouse interaction in the editor stops working again.

What I have already tried:

• Full removal of settings and caches
• Reinstallation of multiple PyCharm versions
• Disabling hardware acceleration via vmoptions:
  -Dsun.java2d.metal=false
  -Didea.hardware.accelerated=false
• Running Intel version under Rosetta
• Removing quarantine attributes
• Creating new projects
• Testing without additional plugins

The issue began approximately one week ago and persisted after updating macOS to 26.3.

It appears to be related specifically to the editor rendering or event handling layer, as the rest of the UI remains functional.

Could you please advise on further diagnostic steps or confirm whether this is a known compatibility issue with macOS 26.3?