Minor issue: Toolbar icons are sometimes incomplete (no text etc)

Since upgrading to version 1.9.5.0 (Windows 7 x64 SP1 fully patched), I notice that sometimes (not always), the icons to the right of pull on the main top toolbar (e.g. fetch gitflow etc.), show the graphic symbol for the icon but not the text below it. This occurs at random, but doesn't ever seem to be noticeable at application startup. I am wondering therefore if it's a GDI resource leak issue (or similar).

For some reason I cannot attached the screenshot - as I get a message: "Jira could not attach the file as there was a missing token. Please try attaching the file again". If you contact me by email, I can send it.