Textarea: "some text and now {{TEXT_INSERTED_VIA_JS}}"
POST: "some text and now "


Textarea: "some text and now {{TEXT_INSERTED_VIA_JS}} {{TEXT_INSERTED_VIA_JS}} {{TEXT_INSERTED_VIA_JS}}"
POST: "some text and now "

Textarea: "some text and now {{TEXT_INSERTED_VIA_JS}} {{TEXT_INSERTED_VIA_JS}} some text {{TEXT_INSERTED_VIA_JS}}"
POST: "some text and now {{TEXT_INSERTED_VIA_JS}} {{TEXT_INSERTED_VIA_JS}} some text "

Textarea: "some text and now {{TEXT_INSERTED_VIA_JS}} some more text"
POST: "some text and now {{TEXT_INSERTED_VIA_JS}} some more text"

Textarea: "some text and now {{TEXT_INSERTED_VIA_JS}} *I remove space here via keyboard*"
POST: "some text and now {{TEXT_INSERTED_VIA_JS}}"