FULL PRODUCT VERSION :
java version "1.8.0_141"
Java(TM) SE Runtime Environment (build 1.8.0_141-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.141-b15, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 10.0.16299.64]

A DESCRIPTION OF THE PROBLEM :
See
https://stackoverflow.com/questions/47616221/javafx-tabpane-tabs-dont-update-position
for all the details (question, answer and comments).

Has been mentioned on the OpenJFX mailing list:
http://mail.openjdk.java.net/pipermail/openjfx-dev/2017-December/021111.html


REPRODUCIBILITY :
This bug can be reproduced always.