if you go fullscreen and then leave it won't let you maximize the window.
Environment
Processor Information:
Vendor: AuthenticAMD
CPU Family: 0x12
CPU Model: 0x1
CPU Stepping: 0x0
CPU Type: 0x0
Speed: 2993 Mhz
4 logical processors
4 physical processors
HyperThreading: Unsupported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Unsupported
SSE4a: Supported
SSE41: Unsupported
SSE42: Unsupported
Network Information:
Network Speed:
Operating System Version:
Windows 7 (64 bit)
NTFS: Supported
Crypto Provider Codes: Supported 311 0x0 0x0 0x0
Video Card:
Driver: ATI Radeon HD 4800 Series
DirectX Driver Name: aticfx32.dll
Driver Version: 8.970.100.1100
DirectX Driver Version: 8.17.10.1129
Driver Date: 29 Apr 2013
OpenGL Version: 3.3
Desktop Color Depth: 32 bits per pixel
Monitor Refresh Rate: 60 Hz
DirectX Card: ATI Radeon HD 4800 Series
VendorID: 0x1002
DeviceID: 0x9440
Number of Monitors: 1
Number of Logical Video Cards: 1
No SLI or Crossfire Detected
Primary Display Resolution: 1920 x 1080
Desktop Resolution: 1920 x 1080
Primary Display Size: 26.65" x 15.00" (30.55" diag)
67.7cm x 38.1cm (77.6cm diag)
Primary Bus Type Not Detected
Primary VRAM: 1024 MB
Supported MSAA Modes: 2x 4x 8x
Sound card:
Audio device: Speakers (Realtek High Definiti
Memory:
RAM: 8173 Mb
Miscellaneous:
UI Language: English
Microphone: Not set
Media Type: Undetermined
Total Hard Disk Space Available: 476837 Mb
Largest Free Hard Disk Block: 268913 Mb
OS Install Date: Dec 31 1969
Game Controller: XInput Controller #1 detected
Thank you for your report.
However, your ticket has been resolved as a duplicate.
This issue has been linked to the original bugreport: MC-68754. You can find or add further information on that report.
If you haven't, please search before reporting any bugs, as it's likely that one exists already.