What's Changed

New Features 🎉

• Add icon to st.button by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9301
• Add icon to st.download_button by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9322
• Add icon to st.form_submit_button by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9327
• Add st.logo size options by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9177
• [feat] Add icon to st.link_button by @sfc-gh-bnisco in https://github.com/streamlit/streamlit/pull/9350
• Add icon to st.popover by @sfc-gh-pchiu in https://github.com/streamlit/streamlit/pull/9367
• Allow setting CSS class on elements via key by @lukasmasuch in https://github.com/streamlit/streamlit/pull/9295
• Add config option to set TTL for disconnected sessions by @vdonato in https://github.com/streamlit/streamlit/pull/9179
• Add .pdf to the list of safe static files by @kajarenc in https://github.com/streamlit/streamlit/pull/9439
• Feature: Add enter_to_submit param to st.form by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9480
• Add expanded param to st.navigation by @kmcgrady in https://github.com/streamlit/streamlit/pull/9484
• [feat] Add width and height to st.{map|pydeck_chart} by @sfc-gh-bnisco in https://github.com/streamlit/streamlit/pull/9464
• [feat] Utilize new fullscreen Toolbar for st.{map|pydeck_chart} by @sfc-gh-bnisco in https://github.com/streamlit/streamlit/pull/9501
• [feat] Selection on st.pydeck_chart by @sfc-gh-bnisco in https://github.com/streamlit/streamlit/pull/9377
• st.experimental_audio_input by @sfc-gh-nbellante in https://github.com/streamlit/streamlit/pull/9404
• Support hierarchical (multi-index) column headers in st.dataframe by @lukasmasuch in https://github.com/streamlit/streamlit/pull/9483
• Prefer column config formatting over Pandas styler by @lukasmasuch in https://github.com/streamlit/streamlit/pull/9538

Bug Fixes 🐛

• [fix] Multiselect label truncation in narrow columns by @sfc-gh-bnisco in https://github.com/streamlit/streamlit/pull/9334
• [fix] st.{balloons|snow} fixes when rendered in st.dialog by @sfc-gh-bnisco in https://github.com/streamlit/streamlit/pull/9335
• Remove st.logo if stale by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9337
• Fix issue with re-adding deleted row in data editor with same index by @lukasmasuch in https://github.com/streamlit/streamlit/pull/8864
• Fix: Margin on button icons by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9378
• Do not format title for MPAv2 in Sidebar nav by @kmcgrady in https://github.com/streamlit/streamlit/pull/9375
• Fix dialogs not re-opening in some cases after dismiss by @raethlein in https://github.com/streamlit/streamlit/pull/9333
• Fix edge case where title can be empty string by @kmcgrady in https://github.com/streamlit/streamlit/pull/9374
• Update runtime.py: change test@test.com to test@example.com by @wyattscarpenter in https://github.com/streamlit/streamlit/pull/9371
• Fix: Make showSidebarNavigation config work in MPAv2 by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9379
• Determine common mime types by extension by @t0mdavid-m in https://github.com/streamlit/streamlit/pull/9390
• Fix bold font in header showing less weight by @sfc-gh-pchiu in https://github.com/streamlit/streamlit/pull/9395
• Update page script hash on script start if necessary by @kmcgrady in https://github.com/streamlit/streamlit/pull/9408
• Update overflowing pages to be more deterministic by @kmcgrady in https://github.com/streamlit/streamlit/pull/9394
• Fix accidentally watching parent folder for changes by @lukasmasuch in https://github.com/streamlit/streamlit/pull/9453
• Fix: Disable form submission & instructions by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9406
• Do not clear nodes for fragment-finished-via-rerun messages by @raethlein in https://github.com/streamlit/streamlit/pull/9389
• Clear queue also for fragment-runs to prevent vanishing elements by @raethlein in https://github.com/streamlit/streamlit/pull/9381
• Migrate Active Script hash to ScriptRunContext by @kmcgrady in https://github.com/streamlit/streamlit/pull/9441
• Fix dataframe maximum update depth error by @lukasmasuch in https://github.com/streamlit/streamlit/pull/9490
• Add warning for nested paths in url path by @kmcgrady in https://github.com/streamlit/streamlit/pull/9499
• [fix] Remove unneeded margin on map components by @sfc-gh-bnisco in https://github.com/streamlit/streamlit/pull/9506
• Redirect pages with removed trailing slashes by @kmcgrady in https://github.com/streamlit/streamlit/pull/9500
• Fix st.json to keep container bounds by @lukasmasuch in https://github.com/streamlit/streamlit/pull/9521
• [Fix] st.multiselect placeholder by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9523
• [Fix] Embedded app spacing by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9524
• [fix] DeckGl zoom button borders and styling by @sfc-gh-bnisco in https://github.com/streamlit/streamlit/pull/9536

Other Changes

• Allow tenacity version 9.x by @lukasmasuch in https://github.com/streamlit/streamlit/pull/9348
• [Fix] Logo maintains aspect ratio on width resize by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9368
• [Fix] Logo blink on MPA v1 page change by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9361
• Update watchdog so Streamlit can use version 5.X by @RubenVanEldik in https://github.com/streamlit/streamlit/pull/9354
• Fix: Material icon color in buttons by @mayagbarnes in https://github.com/streamlit/streamlit/pull/9393
• Adding more specific exceptions by @sfc-gh-nbellante in https://github.com/streamlit/streamlit/pull/9318
• Add missing in operator to docstring example by @pratapvardhan in https://github.com/streamlit/streamlit/pull/9413
• Update vega frontend dependencies to support new features by @lukasmasuch in https://github.com/streamlit/streamlit/pull/9443
• Remove fullscreen button for st.bokeh_chart by @lukasmasuch in https://github.com/streamlit/streamlit/pull/9528

New Contributors

• @t0mdavid-m made their first contribution in https://github.com/streamlit/streamlit/pull/9390
• @pratapvardhan made their first contribution in https://github.com/streamlit/streamlit/pull/9413

Full Changelog: https://github.com/streamlit/streamlit/compare/1.38.0...1.39.0