TOPIC:

Bug or I don't use TcyResizer correctly. An idea ?
Screenshot : TcyResizer demo. I just put a pagecontrol and label on the tabsheet.
 

Yes,
this is a bug, we will try to fix it.

Your OS, CT ver, etc ?
 

Thank you.

My OS : Windows 10
CT Version 7.9

About computer :

up.
Using CT.8.21

My configuration :
        Operating System
            Windows 10 Professionnel 64-bit
        CPU
            Intel Core i7 4790K @ 4.00GHz    40 °C
            Haswell 22nm Technology
        RAM
            16,0GB Single-Channel DDR3 @ 932MHz (10-11-10-30)
        Motherboard
            ASUSTeK COMPUTER INC. Z97-PRO GAMER (SOCKET 1150)    24 °C
        Graphics
            S24B300 (1920x1080@60Hz)
            PBM_V240W (1920x1200@59Hz)
            4095MB NVIDIA GeForce GTX 970 (ASUStek Computer Inc)    37 °C
        Storage
            931GB Crucial CT1000MX500SSD1 (SATA (SSD))
            119GB Crucial C300-CTFDDAC128MAG (SATA (SSD))
            465GB Crucial CT500MX500SSD1 (SATA (SSD))
        Optical Drives
            ASUS DRW-24F1ST a
        Audio
            JBL Quantum 400* Game

 I worked around the problem by using the component TplPanelPages(Extra Controls 2).
It works fine

Thanks Sir