Looks like there is a performance issue with Electron and MacOS Tahoe. I see Joplin 3.5 is being built with Electron v37.4, but the bug is addressed with v37.6. Details here fix: MacOS 26 Tahoe - stop overriding private cornerMask API to fix WindowServer GPU load by avarayr · Pull Request #48376 · electron/electron · GitHub
I've opened a pull request:
Thank you for reporting this!
2 Likes