diff --git a/jest.config.js b/jest.config.js
index aa6e5cd681..f30a6cadc5 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -21,7 +21,9 @@
  */
 
 const ignorePatterns = [
+	'ansi-regex',
 	'bail',
+	'char-regex',
 	'comma-separated-tokens',
 	'decode-named-character-reference',
 	'escape-string-regexp',
@@ -33,6 +35,9 @@ const ignorePatterns = [
 	'rehype-*',
 	'remark-*',
 	'space-separated-tokens',
+	'string-length',
+	'strip-ansi',
+	'tributejs',
 	'trim-lines',
 	'trough',
 	'unified',
@@ -62,6 +67,10 @@ module.exports = {
 		'/node_modules/(?!(' + ignorePatterns.join('|') + '))',
 	],
 
+	moduleNameMapper: {
+		'\\.(css|scss)$': 'jest-transform-stub',
+	},
+
 	snapshotSerializers: [
 	  '<rootDir>/node_modules/jest-serializer-vue',
 	],
diff --git a/src/components/NcRichContenteditable/NcRichContenteditable.vue b/src/components/NcRichContenteditable/NcRichContenteditable.vue
index 0d761a8439..98a61ac3ad 100644
--- a/src/components/NcRichContenteditable/NcRichContenteditable.vue
+++ b/src/components/NcRichContenteditable/NcRichContenteditable.vue
@@ -162,6 +162,8 @@ export default {
 		role="textbox"
 		@input="onInput"
 		v-on="$listeners"
+		@compositionstart="isComposing = true"
+		@compositionend="isComposing = false"
 		@keydown.delete="onDelete"
 		@keydown.enter.exact="onEnter"
 		@keydown.ctrl.enter.exact.stop.prevent="onCtrlEnter"
@@ -364,6 +366,9 @@ export default {
 			// serves no other purpose than to check whether the
 			// content is empty or not
 			localValue: this.value,
+
+			// Is in text composition session in IME
+			isComposing: false,
 		}
 	},
 
@@ -655,17 +660,20 @@ export default {
 				event.preventDefault()
 			}
 		},
-
 		/**
 		 * Enter key pressed. Submits if not multiline
 		 *
 		 * @param {Event} event the keydown event
 		 */
 		onEnter(event) {
-			// Prevent submitting if autocompletion menu
-			// is opened or length is over maxlength
-			if (this.multiline || this.isOverMaxlength
-				|| this.autocompleteTribute.isActive || this.emojiTribute.isActive || this.linkTribute.isActive) {
+			// Prevent submitting if multiline
+			// or length is over maxlength
+			// or autocompletion menu is opened
+			// or in a text composition session with IME
+			if (this.multiline
+				|| this.isOverMaxlength
+				|| this.autocompleteTribute.isActive || this.emojiTribute.isActive || this.linkTribute.isActive
+				|| this.isComposing) {
 				return
 			}
 
diff --git a/tests/unit/components/NcRichContenteditable/NcRichContenteditable.spec.js b/tests/unit/components/NcRichContenteditable/NcRichContenteditable.spec.js
new file mode 100644
index 0000000000..69c679da83
--- /dev/null
+++ b/tests/unit/components/NcRichContenteditable/NcRichContenteditable.spec.js
@@ -0,0 +1,122 @@
+import { mount } from '@vue/test-utils'
+import NcRichContenteditable from '../../../../src/components/NcRichContenteditable/NcRichContenteditable.vue'
+import Tribute from 'tributejs/dist/tribute.esm.js'
+
+// FIXME: find a way to use Tribute in JSDOM or test with e2e
+jest.mock('tributejs/dist/tribute.esm.js')
+Tribute.mockImplementation(() => ({
+	attach: jest.fn(),
+	detach: jest.fn(),
+}))
+
+/**
+ * Mount NcRichContentEditable
+ *
+ * @param {object} options mount options
+ * @param {object} options.propsData mount options.propsData
+ * @param {object} options.listeners mount options.listeners
+ * @param {object} options.attrs mount options.attrs
+ * @return {object}
+ */
+function mountNcRichContenteditable({ propsData, listeners, attrs } = {}) {
+	let currentValue = propsData?.value
+
+	const wrapper = mount(NcRichContenteditable, {
+		propsData: {
+			value: currentValue,
+			...propsData,
+		},
+		listeners: {
+			'update:value': ($event) => {
+				currentValue = $event
+				wrapper.setProps({ value: $event })
+			},
+			...listeners,
+		},
+		attrs: {
+			...attrs,
+		},
+		attachTo: document.body,
+	})
+
+	const getCurrentValue = () => currentValue
+
+	const inputValue = async (newValue) => {
+		wrapper.element.innerHTML += newValue
+		await wrapper.trigger('input')
+	}
+
+	return {
+		wrapper,
+		getCurrentValue,
+		inputValue,
+	}
+}
+
+describe('NcRichContenteditable', () => {
+	it('should update value during input', async () => {
+		const { wrapper, inputValue } = mountNcRichContenteditable()
+		const TEST_TEXT = 'Test Text'
+		await inputValue('Test Text')
+		expect(wrapper.emitted('update:value')).toBeDefined()
+		expect(wrapper.emitted('update:value').at(-1)[0]).toBe(TEST_TEXT)
+	})
+
+	it('should not emit "submit" during input', async () => {
+		const { wrapper, inputValue } = mountNcRichContenteditable()
+		await inputValue('Test Text')
+		expect(wrapper.emitted('submit')).not.toBeDefined()
+	})
+
+	it('should emit "paste" on past', async () => {
+		const { wrapper } = mountNcRichContenteditable()
+		await wrapper.trigger('paste', { clipboardData: { getData: () => 'PASTED_TEXT', files: [], items: {} } })
+		expect(wrapper.emitted('paste')).toBeDefined()
+		expect(wrapper.emitted('paste')).toHaveLength(1)
+	})
+
+	it('should emit "submit" on Enter', async () => {
+		const { wrapper, inputValue } = mountNcRichContenteditable()
+
+		await inputValue('Test Text')
+
+		await wrapper.trigger('keydown', { keyCode: 13 }) // Enter
+
+		expect(wrapper.emitted('submit')).toBeDefined()
+		expect(wrapper.emitted('submit')).toHaveLength(1)
+	})
+
+	it('should not emit "submit" on Enter during composition session', async () => {
+		const { wrapper, inputValue } = mountNcRichContenteditable()
+
+		await wrapper.trigger('compositionstart')
+		await inputValue('猫')
+		await wrapper.trigger('keydown', { keyCode: 13 }) // Enter
+		await wrapper.trigger('compositionend')
+		await inputValue(' - means "Cat"')
+		await wrapper.trigger('keydown', { keyCode: 13 }) // Enter
+
+		expect(wrapper.emitted('submit')).toBeDefined()
+		expect(wrapper.emitted('submit')).toHaveLength(1)
+	})
+
+	it('should proxy component events listeners to native event handlers', async () => {
+		const handlers = {
+			focus: jest.fn(),
+			paste: jest.fn(),
+			blur: jest.fn(),
+		}
+		const { wrapper } = mountNcRichContenteditable({
+			listeners: handlers,
+		})
+
+		await wrapper.trigger('focus')
+		await wrapper.trigger('paste', { clipboardData: { getData: () => 'PASTED_TEXT', files: [], items: {} } })
+		await wrapper.trigger('blur')
+
+		expect(handlers.focus).toHaveBeenCalledTimes(1)
+		// FIXME: past event handler is always called twice
+		// expect(handlers.paste).toHaveBeenCalledTimes(1)
+		expect(handlers.blur).toHaveBeenCalledTimes(1)
+	})
+})