Textbox with combobox column source flickers inexplicably

[Alexcamp]

I have a textbox on a continous subform.

The textbox is bound to the second column of an invisible combobox to display
the field from the related table.

I am using this code as source for the textbox: =cboUsager_temps.Column(1)

When I select a record on the main form, the textbox flickers endlessly. Does
anyone know what's going on ?

 

[Alexcamp]

I would like to bring some more information.

After some testing I discovered that this was in fact due to another textbox
having a conditionnal formatting (making the background of the textbox green
if field value = true).

Once I removed the conditionnal format, everything works nicely.

Is this normal ?

If not can anyone suggest a proper technique to conditionnal formatting ?

Thanks