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Hi,
Can you please check if this issue appears when:
- only WPML plugins are activated, as it will tell us if there is an interaction issue with other plugin
- theme is set to a WordPress default like Twenty Nineteen as it will tell us if there is an interaction issue with your theme
If you find that the issue is no longer there, then I suggest you activate the theme first and check if the issue is still happening. If still all working well, then there is possibly some compatibility problem with any of your plugins, so you can for example activate 3 plugins at a time and observe the problem then.
Please make a full site backup before testing this way.