Copying and pasting the characters works as expected.
Works fine when using X11 too.
Anki 2.1.49 (dc80804a) Python 3.8.1 Qt 5.15.1 PyQt 5.15.1
Platform: Linux
Flags: frz=True ao=False sv=2
Add-ons, last update check: 2021-11-16 14:41:01
===Add-ons (active)===
(add-on provided name [Add-on folder, installed at, version, is config changed])
===IDs of active AnkiWeb add-ons===
===Add-ons (inactive)===
(add-on provided name [Add-on folder, installed at, version, is config changed])
Add note id ['1672832404', 2020-12-06T07:44, 'None', '']
Batch Editing ['291119185', 2020-01-14T10:41, 'None', '']
Button Colours Good Again ['2494384865', 2021-04-06T11:57, 'None', '']
Enhance main window ['877182321', 2020-12-23T01:42, 'None', '']
Image Occlusion Enhanced for Anki 21 alpha ['1374772155', 2020-04-27T23:21, 'None', '']
LPCG LyricsPoetry Cloze Generator ['2084557901', 2021-07-24T19:17, 'None', '']
Life Drain ['715575551', 2021-11-04T11:31, 'None', '']
Replay buttons on card ['498789867', 2019-03-03T15:12, 'None', '']
Review Heatmap ['review_heatmap', 2020-04-30T10:23, 'None', '']
Spelling Police ['1410276506', 2020-04-30T01:25, 'None', '']
Syntax Highlighting for Code ['1463041493', 2018-10-06T22:31, 'None', mod]
True Retention ['613684242', 2019-03-03T15:13, 'None', '']