---
title: "MetaTrader 5 Platform Build 2280 - Release Notes"
description: "Improved loading and compilation speed of MQL5 programs. A double click on a chart is now passed as a single-click event to an MQL5... - Release Notes"
image: "https://www.metatrader5.com/i/logo_metatrader5.png"
url: "https://www.metatrader5.com/en/releasenotes/terminal/2120"
---

# MetaTrader 5 Platform Build 2280

## Improved loading and compilation speed of MQL5 programs. A double click on a chart is now passed as a single-click event to an MQL5 program. Previously, such events were not handled

13 December 2019

### Terminal

1. Fixed a bug which caused inability to delete an Expert Advisor from the chart having no data.
2. Fixed chart header display under Wine.

### MQL5

1. Improved loading and compilation speed of MQL5 programs.
2. A double click on a chart is now passed as a [single-click event](https://www.mql5.com/en/docs/event_handlers/onchartevent) to an MQL5 program. Previously, such events were not handled.
3. Fixed [StringTrimRight](https://www.mql5.com/en/docs/strings/stringtrimright) function operation.
4. Added documentation for [DirectX 3D visualization functions](https://www.mql5.com/en/docs/directx).

### Tester

1. Fixed a bug which cased the testing symbol in settings to be empty. The error could result from switching between trading accounts with different sets of trading instruments. The new behavior: if the previously selected symbol is not found in the currently connected trading account, the first available symbol In Market Watch is automatically selected instead.

### MetaEditor

1. Fixed application icon loading when reopening project properties.

Updated user interface translations. Fixes based on crash logs.

**Earlier publications:**

- [MetaTrader 5 Platform build 2265: DirectX functions for 3D visualization in MQL5 and symbol settings in Strategy Tester](https://www.metatrader5.com/en/releasenotes/terminal/2117)
- [MetaTrader 5 Platform Build 2190](https://www.metatrader5.com/en/releasenotes/terminal/2106)
- [MetaTrader 5 platform build 2170: MQL5 scope, global Strategy Tester and built-in Virtual Hosting updates](https://www.metatrader5.com/en/releasenotes/terminal/2099)
- [MetaTrader 5 platform build 2085: Integration with Python and Strategy Tester improvements](https://www.metatrader5.com/en/releasenotes/terminal/2085)
- [MetaTrader 5 Platform build 2005: Economic Calendar, MQL5 applications as services and R language API](https://www.metatrader5.com/en/releasenotes/terminal/1920)