A bit hard to understand what you're describing in terms of behavior.
Can you post screenshots of what you are doing, what you are seeing - specifically around this -
s I select code (in Syntax Colors) the formating of the sql seem to shift the letters to the left or right as the highlighted section gets dragged around.
Also share the actual code so we can try to replicate the issue on our side.
What code you are using doesn't seem to matter.
Btw this is a Win 7 Corp machine. This issue start right from the moment the new version was installed: and he install I used was sqldeveloper-184.108.40.206.1748-x64.zip
On the left I typed "select column_name" but you can see name has been squished, or "select * from all_tab" on the right:
Or from with in the Syntax Color preference screen: The code is the default sample code that appears in the preference when you open the app.
On the right side above there are actually 2 "s"'s typed I copied the select here: "Select * from all_tab_columnss "
No as I drag across the the word CLUSTER_PROBABILITY you can see how the formatting shifts, look at the positioning of the Y in PROBABILITY
Let me know what else I can provide.
Are other folks at your org seeing the same thing, or is it just you?