@netvilox,
Below is provided a solution for Threaded layout:
1.Open the /wp-content/plugins/wpforo/wpf-themes/classic/layouts/4/forum.php file
2. Find the following code:ย
<?php if( WPF()->forum->options['layout_threaded_filter_buttons'] ): ?>
<a class="wpf-threads-filter wpf-newest wpf-active" data-filter="newest" wpf-tooltip="<?php echo esc_attr(wpforo_phrase( 'Newest', false )) ?>" wpf-tooltip-position="top"><i class="fas fa-clock"></i></a>
<a class="wpf-threads-filter wpf-hottest" data-filter="hottest" wpf-tooltip="<?php echo esc_attr(wpforo_phrase( 'Popular', false )) ?>" wpf-tooltip-position="top"><i class="fab fa-hotjar"></i></a>
<a class="wpf-threads-filter wpf-solved" data-filter="solved" wpf-tooltip="<?php echo esc_attr(wpforo_phrase( 'Resolved', false )) ?>" wpf-tooltip-position="top"><i class="fas fa-check-circle"></i></a>
<a class="wpf-threads-filter wpf-unsolved" data-filter="unsolved" wpf-tooltip="<?php echo esc_attr(wpforo_phrase( 'Unsolved', false )) ?>" wpf-tooltip-position="top"><i class="fas fa-times-circle"></i></a>
<?php endif; ?>
3. replace with this one:
<?php if( WPF()->forum->options['layout_threaded_filter_buttons'] ): ?>
<a class="wpf-threads-filter wpf-solved wpf-active" data-filter="solved" wpf-tooltip="<?php echo esc_attr(wpforo_phrase( 'Resolved', false )) ?>" wpf-tooltip-position="top"><i class="fas fa-check-circle"></i></a>
<a class="wpf-threads-filter wpf-newest " data-filter="newest" wpf-tooltip="<?php echo esc_attr(wpforo_phrase( 'Newest', false )) ?>" wpf-tooltip-position="top"><i class="fas fa-clock"></i></a>
<a class="wpf-threads-filter wpf-hottest" data-filter="hottest" wpf-tooltip="<?php echo esc_attr(wpforo_phrase( 'Popular', false )) ?>" wpf-tooltip-position="top><i class="fab fa-hotjar"></i></a>
<a class="wpf-threads-filter wpf-unsolved" data-filter="unsolved" wpf-tooltip="<?php echo esc_attr(wpforo_phrase( 'Unsolved', false )) ?>" wpf-tooltip-position="top"><i class="fas fa-times-circle"></i></a>
<?php endif; ?>
Please don't forget to use the update-safe way for the customization.ย Instruction is here: https://wpforo.com/docs/root/forum-themes/theme-customization/