Cannot copy and paste from outside MCA

[AngelOfCreation]

Describe the bug User is unable to paste copied text from outside of MCA, like notepad.

To Reproduce Steps to reproduce the behavior:

1. Write text in Notepad++
2. Select all, then copy
3. Try to paste into any text field in MCA, Expected behavior The text should be pasted.

Screenshots and other files If applicable, add screenshots to help explain your problem. Relevant world files ('.mca'-files) and selection files ('.csv'-files) must be bundled in a '.zip'-archive. To create the 'debug.log' file, follow these steps:

1. Enable 'Print debug messages' in 'File'-->'Settings'.
2. Restart MCA Selector.
3. Reproduce the problem.
4. Close MCA Selector and attach the 'debug.log' file to this bug report.

Environment (please complete the following information):

• OS: Windows 10 Enterprise
• Java version: Version 8 Update 411 (build 1.8.0_411-b09)
• Version of MCA Selector: 2.2.2

Additional context Add any other context about the problem here, e.g.: This is really annoying as I have to write every single biome out in MCA instead of being able to use Notepad++ tools. I want to filter by biomes like so: "'alexscaves:forlorn_hollows','alexscaves:candy_cavity','alexscaves:toxic_caves','alexscaves:abyssal_chasm','alexscaves:primordial_caves','alexscaves:magnetic_caves'" but I can't paste it in.