I worked at Eclipse yesterday when my keyboard shortcuts stopped working. All of them worked until yesterday. Pressing Ctrl + Shift brings up a pop-up message stating that the cursor does not yet have a detected image. Ctrl works fine, and so shift + letter. Only this error causes only Ctrl + Shift +. Even just pressing Ctrl + Shift in itself brings up a popup window:

I am using Eclipse with the Darkest Dark Theme plugin in Windows 10.
What causes this error, and how to fix it? Thanks in advance.
eclipse keyboard-shortcuts
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