Description: With SAL_USE_VCLPLUGIN=gtk4 common cut/paste (ctrl-c/ctrl-v) shortcuts don't work if non-latin language is set. Steps to Reproduce: 1. Set SAL_USE_VCLPLUGIN=gtk4, open any app calc or writer 2. Try to copy/paste with ctrl-c/ctrl-v a snippet of text with latin input layout, it works. 3. Switch to non-latin input like Cyrillic (Russian) 4. Try to copy/paste with ctrl-c/ctrl-v. The clipboard is empty, nothing happens On usual gtk3 this works well. Actual Results: Nothing happens when using ctrl-c/ctrl-v and non-latin input layout is active Expected Results: clipboard should work Reproducible: Always User Profile Reset: No Additional Info: Version: 24.2.4.2 (X86_64) / LibreOffice Community Build ID: 420(Build:2) CPU threads: 8; OS: Linux 6.10; UI render: default; VCL: gtk4 Locale: en-US (en_US.UTF-8); UI: en-US 24.2.4-2 Calc: threaded