GlassSync
by YodaForce157
GlassSync is a Fabric client mod that corrects how glass pane block states display on Hypixel Skyblock.
What it does
On Hypixel Skyblock, glass panes can show the wrong block state on the client because the server and client drift apart. Without waiting for a packet from the server, the client now sets a glass pane's block state on its own, which keeps the displayed pane in line with the server's data. Only the client needs it; servers run without it, and it changes nothing on the server side. Released under the MIT License, GlassSync is open source and covers the 1.21.5 – 1.21.11 range.
Key features
Client-side block state fix
The client sets the glass pane block state itself instead of waiting for the server's update packet.
Matching displayed state
The pane shown on screen replicates the state the server holds, which resolves the desync on Skyblock.
Easier gemstone mining
With glass panes shown correctly, aiming at them for gemstone mining becomes simpler and more efficient.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
SBFixes is a Fabric client mod for 1.21.11 under the GNU General Public License v2.0 or later, and it is open source. Dragon's Projectile Fix is a Fabric client mod for 1.21.11 under the MIT License, and it is not open source. Glass Drops Always is a Fabric mod for 1.21.11 that runs on client and server under the MIT License, and it is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| GlassSync | Fabric | 1.21.5 – 1.21.11 | Client-side only | 2026-01-26 |
| SBFixes | Fabric | 1.21.11 | Client-side only | 2026-06-10 |
| Dragon's Projectile Fix | Fabric | 1.21.11 | Client-side only | 2026-05-12 |
| Glass Drops Always | Fabric | 1.21.11 | Client and server | 2026-02-18 |
Questions
Does GlassSync need to be installed on the server?
In the catalog
GlassSync is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from YodaForce157
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What the author says
This mod fixes Hypixel Skyblock's Glass Pane client blockstate desync issue on 1.21.5, allowing for gemstone mining to be easier and more efficient. This mod makes the client update the blockstate manually, rather than waiting for an update packet from the server. The block shown on the client will then replicate…
Official listing
- Modrinth page
- modrinth.com/mod/glasssync
- Owner
- YodaForce157
- Published
- 2025-07-09
- Updated on Modrinth
- 2026-01-26
- Facts verified
- 2026-10-15