Deleting text from p:textEditor using backspace-key - jsf

Question

I want to implement a sort of post-it function that users can use to make notes. I implemented this by opening p:textEditor in a dialog with "Save" and "Cancel" buttons at the bottom. This mostly works fine, the only problem is that I can't delete text in the textEditor using the backspace-key. Deleting using the del-key works fine.
Here is my code:
The commandButton that opens the dialog containing the textEditor:
<p:commandButton value="openPostit" widgetVar="openPostit"
onsuccess="PF('frmPostit').show();"
/>
The dialog:
<h:form id="frmPostit">
<p:dialog id="dlgPostit" widgetVar="dlPostit"
dynamic="false" modal="false"
fitViewport="false" resizable="true"
closable="true"
onHide="$('#frmPostit\\:quit').click();">
<p:hotkey bind="esc" handler="PF('dlgPostit').hide();" />
<p:outputPanel>
<p:textEditor id="textPostit" widgetVar="textPostit"
value="#{backingbean.text}"
style="vertical-align: top; height: 450px">
</p:textEditor>
<div style="position: absolute; bottom: 10px" >
<p:commandButton value="Save"
actionListener="#{backingbean.saveText()}"
accesskey="s"
process="#form"
icon="fa fa-check-square-o"
oncomplete="PF('dlgPostit').hide();}"
/>
<p:commandButton value="Cancel" id="quit"
icon="fa fa-close"
process="#this" resetValues="true"
immediate="true"
accesskey="a"
oncomplete="PF('dlgPostit').hide();" />
</div>
</p:outputPanel>
</p:dialog>
</h:form>
Any idea why the backspace-key won't delete the text in the textEditor?
EDIT: Additional information I found that may be interesting: I can delete linebreaks using the backspace-key (but not text)