Copy/Paste - Duplicate - Move Weird behavior

Bonjour to the Community,

This is my 1st post. I have started with Pure Data Vanilla v.0.48.1 (Repos) / v0.49 Win and Purr Data v.2.9.0 (JGU packages) just 3 months ago running mainly under Linux Mint Cinnamon 19.2 64-bit (based on Ubuntu 18.04) and time to time under Windows 10 64-bit. My PC is an HP Pavilion DV8-1190ef - CPU Intel Core i7 720QM (4 cores x 2 threads) @ 1.60 GHz + RAM 8 GB + GPU nVidia GT230M. My preference is definitively for Purr Data and obviously you know why. Many thanks and congratulations to the developers, maintainers and contributors.

I'm working on a free/libre (personnel) project: A MIDI (Musical Instrument Digital Interface) emulator of the Yamaha Music Disk Recorder (MDR-3) marketed 30 years ago dedicated to its Electone Organ Series. My project has currently about 700 objects with the [16+1+1 seq] objects (Cyclone) being its heart and it's now organized with about 15 GOP/sub-patches.

As my project is getting more complex, I'm facing to an increasing numbers of issues related to Purr Data / Externals (and surely to Pure Data engine v.0.48 too). This includes 'Copy/Paste - Duplicate - Move Weird behavior' (subject of this post), awa Ghost objects, Missing objects (when help.pd are available), Main/parent patch closing itself or freezing after heavy SysEx-Out traffic (but not with the same SysEx-In traffic), Externals not up-to-date at all like the Cyclone dinosaur v.0.2.x!, Print function (PDF) regression, CPU overload at 100% (it seems only ONE thread is effectively used even if 8 are available on my PC), etc. which will be reported in future posts.

So back to Copy/Paste - Duplicate - Move Weird behavior. I had no conform paste of the original, duplication of objects in paste due to the time requested by the operation and any indication on the screen, the move by one screen of the duplication needed about 30 to 60 minutes, etc.

Solution: Thanks to Albert Graef who few days ago pointed me to the solution. 'Delete your Purr Data preferences'. It was so simple but strange too, like if not all preferences were/are displayed to the user! After that, 100% of these problems were gone and Purr Data is back to life.

Since, I was only able to reproduce clearly on issue: No conform paste (bigger size of objects (but not all) & comments) of the original.

Preferences -> Startup -> startup flags -> -font-size 12 (now OK) / -font-size 24 (bad behavior).

Thank you. Cheers