# Aseprite v1.3.17.1 & v1.3.18-beta2

**URL:** https://community.aseprite.org/t/aseprite-v1-3-17-1-v1-3-18-beta2/28279
**Category:** News
**Created:** [April 21, 2026, 7:21pm UTC](https://community.aseprite.org/t/aseprite-v1-3-17-1-v1-3-18-beta2/28279 "2026-04-21T19:21:41Z")
**Posts on this page:** 1
**Showing post:** 1

<div class="post-metadata">

### Author: ![dacap](https://community.aseprite.org/user_avatar/community.aseprite.org/dacap/32/10_2.png) [@dacap](https://community.aseprite.org/u/dacap)
#### Post date: [April 21, 2026, 7:21pm UTC](https://community.aseprite.org/t/aseprite-v1-3-17-1-v1-3-18-beta2/28279/1 "2026-04-21T19:21:42Z")

</div>

Hi Asepriters! Today we’re releasing a patch with several bug fixes, and a little new v1.3.18-beta2 with some changes about how layer groups are presented in the timeline:

![out](https://community.aseprite.org/uploads/default/original/3X/a/5/a598a1051c7a810890f74ee4f35841d65eb0c350.webp)

### What’s new in Aseprite v1.3.18-beta2

- Better presentation of Layer Groups in Timeline [#5651](https://github.com/aseprite/aseprite/issues/5651) [#5758](https://github.com/aseprite/aseprite/pull/5758)
- Fixed hidden layers affect z-index [#5681](https://github.com/aseprite/aseprite/issues/5681)
- New `-power-of-two-size` CLI parameter to create sprite sheets with a power of two size [#2289](https://github.com/aseprite/aseprite/issues/2289)
- Fixed bug opening `.aseprite-extension` from Windows File Explorer [#5744](https://github.com/aseprite/aseprite/issues/5744)
- Fixed right-click on multi-line text editor (e.g. user data field)
- Avoid confusing Eyedropper behavior when there is no Reference Layer available [#5685](https://github.com/aseprite/aseprite/issues/5685)
- +Changes in [v1.3.17.1](#aseprite-v1-3-17-1)
- Lua API:
  - New plugin API to add custom file formats when loading/saving sprites [#4950](https://github.com/aseprite/aseprite/issues/4950) [#5174](https://github.com/aseprite/aseprite/pull/5174)
  - Improved Dialog labels and buddy enabled handling [#5117](https://github.com/aseprite/aseprite/issues/5117) [#5554](https://github.com/aseprite/aseprite/pull/5554)
  - Added support for eyedropper tool in `app.useTool()`

**Aseprite v1.3.18-beta3**

- Auto-detect custom/user-defined file formats by file extension [#5772](https://github.com/aseprite/aseprite/issues/5772)
- Fixed crash using “Undo Limit” option [#5767](https://github.com/aseprite/aseprite/issues/5767)

### What’s new in Aseprite v1.3.17.1

- Fixed _Edit \> Insert Text_ which doesn’t paste text on viewport’s center [#5615](https://github.com/aseprite/aseprite/issues/5615)
- Allow installing extensions by dropping them into the preferences dialog [#5697](https://github.com/aseprite/aseprite/pull/5697)
- Fixed tips for thin filled ellipses (thanks to [@emmachase](https://github.com/aseprite/aseprite/pull/5745))
- Fixed underscore and strike-sthrough not shifted with layer’s name [#5736](https://github.com/aseprite/aseprite/issues/5736) (thanks to [@sliva0](https://github.com/aseprite/aseprite/pull/5737))
- Fixed color picker selecting below alpha bar [#2006](https://github.com/aseprite/aseprite/issues/2006) (thanks to [@luke-henry-04](https://github.com/aseprite/aseprite/pull/5702))
- Fixed selection tool performance in tilemap layers in ‘Tiles’ mode [#5760](https://github.com/aseprite/aseprite/pull/5760)
- Fixed crash when painting in an empty tilemap in manual mode [#5717](https://github.com/aseprite/aseprite/issues/5717)
- Fixed bug showing invalid zoom level in status bar [#5545](https://github.com/aseprite/aseprite/issues/5545) (thanks to [@Darth712](https://github.com/aseprite/aseprite/pull/5723))
- Release mouse capture after switching to other app with Alt+Tab [#325](https://github.com/aseprite/aseprite/issues/325) [#5601](https://github.com/aseprite/aseprite/pull/5601) [#5691](https://github.com/aseprite/aseprite/pull/5691)
- Fixed the Palette unlock icon (thanks to [@thkwznk](https://github.com/aseprite/aseprite/pull/5699))
- Added some missing translation strings for the _Advanced Mode_ dialog [#5704](https://github.com/aseprite/aseprite/issues/5704)
- macOS: Inactive window doesn’t pass events to window below [#4561](https://github.com/aseprite/aseprite/issues/4561) [#4835](https://github.com/aseprite/aseprite/pull/4835)
- Linux: Don’t change process name to “main”
- `.aseprite` decoder/encoder:
  - Fixed crash decoding invalid external file types
  - Fixed stack overflow decoding multiple level of properties

- Lua API:
  - Update [API version](https://www.aseprite.org/api/app#appapiversion) to 40
  - Fixed moving active cel to 0,0 when drawing for some specific scripts [#5679](https://github.com/aseprite/aseprite/issues/5679)
  - Added `Sprite.hasAssociatedFile` property [#5721](https://github.com/aseprite/aseprite/issues/5721)

**Aseprite v1.3.17.2**

- Fixed layers distortion at 20% zoom level [#5774](https://github.com/aseprite/aseprite/issues/5774)
- Fixed selection of one tile in a tilemap layer in tiles mode [#5769](https://github.com/aseprite/aseprite/issues/5769) [t/28282](https://community.aseprite.org/t/28282)

* * *

[How to update Aseprite](https://www.aseprite.org/faq/#how-do-i-update-my-current-version)

[How to get the beta version](https://www.aseprite.org/beta/)

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_[View the full topic](https://community.aseprite.org/t/aseprite-v1-3-17-1-v1-3-18-beta2/28279)._